diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..18b0590
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.10.0)
+project(BetterSTL VERSION 0.1.0 LANGUAGES C CXX)
+
+add_library(BetterSTL src/BigInteger.cpp
+    src/BigDecimal.cpp)
+
diff --git a/CMakePresets.json b/CMakePresets.json
new file mode 100644
index 0000000..8e31bb1
--- /dev/null
+++ b/CMakePresets.json
@@ -0,0 +1,17 @@
+{
+    "version": 8,
+    "configurePresets": [
+        {
+            "name": "Clang",
+            "displayName": "使用工具链文件配置预设",
+            "description": "设置 Ninja 生成器、版本和安装目录",
+            "generator": "Ninja",
+            "binaryDir": "${sourceDir}/out/build/${presetName}",
+            "cacheVariables": {
+                "CMAKE_BUILD_TYPE": "Debug",
+                "CMAKE_TOOLCHAIN_FILE": "",
+                "CMAKE_INSTALL_PREFIX": "${sourceDir}/out/install/${presetName}"
+            }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/src/BigDecimal.cpp b/src/BigDecimal.cpp
new file mode 100644
index 0000000..473a0f4
diff --git a/src/BigInteger.cpp b/src/BigInteger.cpp
new file mode 100644
index 0000000..473a0f4