diff --git a/package-lock.json b/package-lock.json
index d463b82..c9a8864 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,11 +12,13 @@
 				"github-slugger": "^2.0.0",
 				"rehype-external-links": "^3.0.0",
 				"rehype-highlight": "^7.0.1",
+				"rehype-katex": "^7.0.1",
 				"rehype-slug": "^6.0.0",
 				"rehype-stringify": "^10.0.1",
 				"remark": "^15.0.1",
 				"remark-breaks": "^4.0.0",
 				"remark-gfm": "^4.0.0",
+				"remark-math": "^6.0.0",
 				"remark-rehype": "^11.1.1",
 				"yaml": "^2.6.0"
 			},
@@ -866,6 +868,12 @@
 				"@types/unist": "*"
 			}
 		},
+		"node_modules/@types/katex": {
+			"version": "0.16.7",
+			"resolved": "https://registry.npmjs.org/@types/katex/-/katex-0.16.7.tgz",
+			"integrity": "sha512-HMwFiRujE5PjrgwHQ25+bsLJgowjGjm5Z8FVSf0N6PwgJrwxH0QxzHYDcKsTfV3wva0vzrpqMTJS2jXPr5BMEQ==",
+			"license": "MIT"
+		},
 		"node_modules/@types/mdast": {
 			"version": "4.0.4",
 			"resolved": "https://registry.npmjs.org/@types/mdast/-/mdast-4.0.4.tgz",
@@ -996,6 +1004,15 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
 		},
+		"node_modules/commander": {
+			"version": "8.3.0",
+			"resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
+			"integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==",
+			"license": "MIT",
+			"engines": {
+				"node": ">= 12"
+			}
+		},
 		"node_modules/cookie": {
 			"version": "0.6.0",
 			"resolved": "https://registry.npmjs.org/cookie/-/cookie-0.6.0.tgz",
@@ -1075,6 +1092,18 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
 		},
+		"node_modules/entities": {
+			"version": "4.5.0",
+			"resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
+			"integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
+			"license": "BSD-2-Clause",
+			"engines": {
+				"node": ">=0.12"
+			},
+			"funding": {
+				"url": "https://github.com/fb55/entities?sponsor=1"
+			}
+		},
 		"node_modules/esbuild": {
 			"version": "0.21.5",
 			"resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.21.5.tgz",
@@ -1185,6 +1214,75 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/hast-util-from-dom": {
+			"version": "5.0.1",
+			"resolved": "https://registry.npmjs.org/hast-util-from-dom/-/hast-util-from-dom-5.0.1.tgz",
+			"integrity": "sha512-N+LqofjR2zuzTjCPzyDUdSshy4Ma6li7p/c3pA78uTwzFgENbgbUrm2ugwsOdcjI1muO+o6Dgzp9p8WHtn/39Q==",
+			"license": "ISC",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"hastscript": "^9.0.0",
+				"web-namespaces": "^2.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
+		"node_modules/hast-util-from-html": {
+			"version": "2.0.3",
+			"resolved": "https://registry.npmjs.org/hast-util-from-html/-/hast-util-from-html-2.0.3.tgz",
+			"integrity": "sha512-CUSRHXyKjzHov8yKsQjGOElXy/3EKpyX56ELnkHH34vDVw1N1XSQ1ZcAvTyAPtGqLTuKP/uxM+aLkSPqF/EtMw==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"devlop": "^1.1.0",
+				"hast-util-from-parse5": "^8.0.0",
+				"parse5": "^7.0.0",
+				"vfile": "^6.0.0",
+				"vfile-message": "^4.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
+		"node_modules/hast-util-from-html-isomorphic": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/hast-util-from-html-isomorphic/-/hast-util-from-html-isomorphic-2.0.0.tgz",
+			"integrity": "sha512-zJfpXq44yff2hmE0XmwEOzdWin5xwH+QIhMLOScpX91e/NSGPsAzNCvLQDIEPyO2TXi+lBmU6hjLIhV8MwP2kw==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"hast-util-from-dom": "^5.0.0",
+				"hast-util-from-html": "^2.0.0",
+				"unist-util-remove-position": "^5.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
+		"node_modules/hast-util-from-parse5": {
+			"version": "8.0.2",
+			"resolved": "https://registry.npmjs.org/hast-util-from-parse5/-/hast-util-from-parse5-8.0.2.tgz",
+			"integrity": "sha512-SfMzfdAi/zAoZ1KkFEyyeXBn7u/ShQrfd675ZEE9M3qj+PMFX05xubzRyF76CCSJu8au9jgVxDV1+okFvgZU4A==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"@types/unist": "^3.0.0",
+				"devlop": "^1.0.0",
+				"hastscript": "^9.0.0",
+				"property-information": "^6.0.0",
+				"vfile": "^6.0.0",
+				"vfile-location": "^5.0.0",
+				"web-namespaces": "^2.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/hast-util-heading-rank": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/hast-util-heading-rank/-/hast-util-heading-rank-3.0.0.tgz",
@@ -1211,6 +1309,19 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/hast-util-parse-selector": {
+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/hast-util-parse-selector/-/hast-util-parse-selector-4.0.0.tgz",
+			"integrity": "sha512-wkQCkSYoOGCRKERFWcxMVMOcYE2K1AaNLU8DXS9arxnLOUEWbOXKXiJUNzEpqZ3JOKpnha3jkFrumEjVliDe7A==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/hast-util-to-html": {
 			"version": "9.0.3",
 			"resolved": "https://registry.npmjs.org/hast-util-to-html/-/hast-util-to-html-9.0.3.tgz",
@@ -1276,6 +1387,23 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/hastscript": {
+			"version": "9.0.0",
+			"resolved": "https://registry.npmjs.org/hastscript/-/hastscript-9.0.0.tgz",
+			"integrity": "sha512-jzaLBGavEDKHrc5EfFImKN7nZKKBdSLIdGvCwDZ9TfzbF2ffXiov8CKE445L2Z1Ek2t/m4SKQ2j6Ipv7NyUolw==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"comma-separated-tokens": "^2.0.0",
+				"hast-util-parse-selector": "^4.0.0",
+				"property-information": "^6.0.0",
+				"space-separated-tokens": "^2.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/highlight.js": {
 			"version": "11.10.0",
 			"resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-11.10.0.tgz",
@@ -1340,6 +1468,22 @@
 				"@types/estree": "^1.0.6"
 			}
 		},
+		"node_modules/katex": {
+			"version": "0.16.11",
+			"resolved": "https://registry.npmjs.org/katex/-/katex-0.16.11.tgz",
+			"integrity": "sha512-RQrI8rlHY92OLf3rho/Ts8i/XvjgguEjOkO1BEXcU3N8BqPpSzBNwV/G0Ukr+P/l3ivvJUE/Fa/CwbS6HesGNQ==",
+			"funding": [
+				"https://opencollective.com/katex",
+				"https://github.com/sponsors/katex"
+			],
+			"license": "MIT",
+			"dependencies": {
+				"commander": "^8.3.0"
+			},
+			"bin": {
+				"katex": "cli.js"
+			}
+		},
 		"node_modules/kleur": {
 			"version": "4.1.5",
 			"resolved": "https://registry.npmjs.org/kleur/-/kleur-4.1.5.tgz",
@@ -1543,6 +1687,25 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/mdast-util-math": {
+			"version": "3.0.0",
+			"resolved": "https://registry.npmjs.org/mdast-util-math/-/mdast-util-math-3.0.0.tgz",
+			"integrity": "sha512-Tl9GBNeG/AhJnQM221bJR2HPvLOSnLE/T9cJI9tlc6zwQk2nPk/4f0cHkOdEixQPC/j8UtKDdITswvLAy1OZ1w==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"@types/mdast": "^4.0.0",
+				"devlop": "^1.0.0",
+				"longest-streak": "^3.0.0",
+				"mdast-util-from-markdown": "^2.0.0",
+				"mdast-util-to-markdown": "^2.1.0",
+				"unist-util-remove-position": "^5.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/mdast-util-newline-to-break": {
 			"version": "2.0.0",
 			"resolved": "https://registry.npmjs.org/mdast-util-newline-to-break/-/mdast-util-newline-to-break-2.0.0.tgz",
@@ -1816,6 +1979,25 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/micromark-extension-math": {
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/micromark-extension-math/-/micromark-extension-math-3.1.0.tgz",
+			"integrity": "sha512-lvEqd+fHjATVs+2v/8kg9i5Q0AP2k85H0WUOwpIVvUML8BapsMvh1XAogmQjOCsLpoKRCVQqEkQBB3NhVBcsOg==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/katex": "^0.16.0",
+				"devlop": "^1.0.0",
+				"katex": "^0.16.0",
+				"micromark-factory-space": "^2.0.0",
+				"micromark-util-character": "^2.0.0",
+				"micromark-util-symbol": "^2.0.0",
+				"micromark-util-types": "^2.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/micromark-factory-destination": {
 			"version": "2.0.1",
 			"resolved": "https://registry.npmjs.org/micromark-factory-destination/-/micromark-factory-destination-2.0.1.tgz",
@@ -2234,6 +2416,18 @@
 				"node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
 			}
 		},
+		"node_modules/parse5": {
+			"version": "7.2.1",
+			"resolved": "https://registry.npmjs.org/parse5/-/parse5-7.2.1.tgz",
+			"integrity": "sha512-BuBYQYlv1ckiPdQi/ohiivi9Sagc9JG+Ozs0r7b/0iK3sKmrb0b9FdWdBbOdx6hBCM/F9Ir82ofnBhtZOjCRPQ==",
+			"license": "MIT",
+			"dependencies": {
+				"entities": "^4.5.0"
+			},
+			"funding": {
+				"url": "https://github.com/inikulin/parse5?sponsor=1"
+			}
+		},
 		"node_modules/picocolors": {
 			"version": "1.1.1",
 			"resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -2315,6 +2509,25 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/rehype-katex": {
+			"version": "7.0.1",
+			"resolved": "https://registry.npmjs.org/rehype-katex/-/rehype-katex-7.0.1.tgz",
+			"integrity": "sha512-OiM2wrZ/wuhKkigASodFoo8wimG3H12LWQaH8qSPVJn9apWKFSH3YOCtbKpBorTVw/eI7cuT21XBbvwEswbIOA==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/hast": "^3.0.0",
+				"@types/katex": "^0.16.0",
+				"hast-util-from-html-isomorphic": "^2.0.0",
+				"hast-util-to-text": "^4.0.0",
+				"katex": "^0.16.0",
+				"unist-util-visit-parents": "^6.0.0",
+				"vfile": "^6.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/rehype-slug": {
 			"version": "6.0.0",
 			"resolved": "https://registry.npmjs.org/rehype-slug/-/rehype-slug-6.0.0.tgz",
@@ -2396,6 +2609,22 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/remark-math": {
+			"version": "6.0.0",
+			"resolved": "https://registry.npmjs.org/remark-math/-/remark-math-6.0.0.tgz",
+			"integrity": "sha512-MMqgnP74Igy+S3WwnhQ7kqGlEerTETXMvJhrUzDikVZ2/uogJCb+WHUg97hK9/jcfc0dkD73s3LN8zU49cTEtA==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/mdast": "^4.0.0",
+				"mdast-util-math": "^3.0.0",
+				"micromark-extension-math": "^3.0.0",
+				"unified": "^11.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/remark-parse": {
 			"version": "11.0.0",
 			"resolved": "https://registry.npmjs.org/remark-parse/-/remark-parse-11.0.0.tgz",
@@ -2676,6 +2905,20 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/unist-util-remove-position": {
+			"version": "5.0.0",
+			"resolved": "https://registry.npmjs.org/unist-util-remove-position/-/unist-util-remove-position-5.0.0.tgz",
+			"integrity": "sha512-Hp5Kh3wLxv0PHj9m2yZhhLt58KzPtEYKQQ4yxfYFEO7EvHwzyDYnduhHnY1mDxoqr7VUwVuHXk9RXKIiYS1N8Q==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/unist": "^3.0.0",
+				"unist-util-visit": "^5.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/unist-util-stringify-position": {
 			"version": "4.0.0",
 			"resolved": "https://registry.npmjs.org/unist-util-stringify-position/-/unist-util-stringify-position-4.0.0.tgz",
@@ -2732,6 +2975,20 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/vfile-location": {
+			"version": "5.0.3",
+			"resolved": "https://registry.npmjs.org/vfile-location/-/vfile-location-5.0.3.tgz",
+			"integrity": "sha512-5yXvWDEgqeiYiBe1lbxYF7UMAIm/IcopxMHrMQDq3nvKcjPKIhZklUKL+AE7J7uApI4kwe2snsK+eI6UTj9EHg==",
+			"license": "MIT",
+			"dependencies": {
+				"@types/unist": "^3.0.0",
+				"vfile": "^6.0.0"
+			},
+			"funding": {
+				"type": "opencollective",
+				"url": "https://opencollective.com/unified"
+			}
+		},
 		"node_modules/vfile-message": {
 			"version": "4.0.2",
 			"resolved": "https://registry.npmjs.org/vfile-message/-/vfile-message-4.0.2.tgz",
@@ -2825,6 +3082,16 @@
 				}
 			}
 		},
+		"node_modules/web-namespaces": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/web-namespaces/-/web-namespaces-2.0.1.tgz",
+			"integrity": "sha512-bKr1DkiNa2krS7qxNtdrtHAmzuYGFQLiQ13TsorsdT6ULTkPLKuu5+GsFpDlg6JFjUTwX2DyhMPG2be8uPrqsQ==",
+			"license": "MIT",
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/wooorm"
+			}
+		},
 		"node_modules/yaml": {
 			"version": "2.6.1",
 			"resolved": "https://registry.npmjs.org/yaml/-/yaml-2.6.1.tgz",
diff --git a/package.json b/package.json
index d2c3546..b6eb9a1 100644
--- a/package.json
+++ b/package.json
@@ -19,11 +19,13 @@
 		"github-slugger": "^2.0.0",
 		"rehype-external-links": "^3.0.0",
 		"rehype-highlight": "^7.0.1",
+		"rehype-katex": "^7.0.1",
 		"rehype-slug": "^6.0.0",
 		"rehype-stringify": "^10.0.1",
 		"remark": "^15.0.1",
 		"remark-breaks": "^4.0.0",
 		"remark-gfm": "^4.0.0",
+		"remark-math": "^6.0.0",
 		"remark-rehype": "^11.1.1",
 		"yaml": "^2.6.0"
 	}
diff --git a/src/lib/components/Markdown.css b/src/lib/components/Markdown.css
index 7f2fd2a..5aee02c 100644
--- a/src/lib/components/Markdown.css
+++ b/src/lib/components/Markdown.css
@@ -145,4 +145,13 @@
             width: 60%;
         }
     }
+    & .katex-html {
+        display: none;
+    }
+    & .katex-display {
+        & math {
+            margin: 1rem;
+            font-size: 1.5rem;
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/lib/components/Markdown.svelte b/src/lib/components/Markdown.svelte
index e23dbe6..6db588d 100644
--- a/src/lib/components/Markdown.svelte
+++ b/src/lib/components/Markdown.svelte
@@ -4,8 +4,10 @@
     import { remark } from 'remark'
     import remarkgfm from 'remark-gfm'
     import remarkBreaks from "remark-breaks"
+    import remarkmath from 'remark-math'
     import remarkRehype from 'remark-rehype'
     import rehypeslug from 'rehype-slug'
+    import rehypeKatex from 'rehype-katex'
     import rehypeHighlight from 'rehype-highlight'
     import rehypeExternalLinks from 'rehype-external-links'
     import rehypeStringify from 'rehype-stringify'
@@ -17,8 +19,10 @@
     let md = remark()
         .use(remarkgfm)      // Github Markdown
         .use(remarkBreaks)   // 改行
+        .use(remarkmath)     // 数式
         .use(remarkRehype, {allowDangerousHtml: true})
         .use(rehypeslug)     // headingにidを設定
+        .use(rehypeKatex)    // 数式
         .use(rehypeHighlight)// Syntax highlight
         .use(rehypeExternalLinks, {target:'_blank', rel:['noreferrer','noopener']})// 外部サイトを新規タブで開く
         .use(rehypeStringify, {allowDangerousHtml: true})