diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..ff490a01
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,51 @@
+# 依赖与构建产物
+**/node_modules/
+**/dist/
+**/build/
+**/target/
+**/out/
+**/.next/
+**/.nuxt/
+**/coverage/
+
+# 日志、缓存与临时文件
+**/*.log
+**/*.tmp
+**/*.temp
+**/.cache/
+**/.eslintcache
+**/npm-debug.log*
+**/yarn-debug.log*
+**/yarn-error.log*
+**/pnpm-debug.log*
+
+# IDE 与操作系统文件
+.idea/
+.vscode/
+*.iml
+.project
+.classpath
+.settings/
+.DS_Store
+Thumbs.db
+
+# 本地环境和密钥配置（保留示例文件）
+**/.env
+**/.env.local
+**/.env.*.local
+!**/.env.example
+!**/.env.*.example
+
+# Java 编译文件
+**/*.class
+.trae/.ignore
+.trae/cache-components/SKILL.md
+.trae/code-reviewer/SKILL.md
+.trae/find-skills/SKILL.md
+.trae/fix/SKILL.md
+.trae/frontend-code-review/SKILL.md
+.trae/frontend-design/SKILL.md
+.trae/fullstack-developer/SKILL.md
+.trae/pr-creator/SKILL.md
+.trae/update-docs/SKILL.md
+.trae/webapp-testing/SKILL.md