diff --git a/.gitignore b/.gitignore
index d456aa4..0c48456 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,6 @@
 *.o
 *.exe
 .vscode/
-.idea/
\ No newline at end of file
+.idea/
+*.dump
+out/
\ No newline at end of file
diff --git a/build.rs b/build.rs
index 4a188d6..eef26d4 100644
--- a/build.rs
+++ b/build.rs
@@ -9,8 +9,10 @@ fn main() {
     .include("./cpp_src/include")
     .file("./cpp_src/fbx_parse.cpp")
     .file("./cpp_src/fbx_wrap.cpp")
+    .file("./cpp_src/db_ops.cpp")
     .compile("fbx_parse");
     // -------------
     println!("cargo:rustc-link-search=native=./cpp_src/lib");
     println!("cargo:rustc-link-lib=fbxsdk");
+    println!("cargo:rustc-link-lib=sqlite3");
 }
diff --git a/cpp_src/db_ops.cpp b/cpp_src/db_ops.cpp
new file mode 100644
index 0000000..fb8a7da
--- /dev/null
+++ b/cpp_src/db_ops.cpp
@@ -0,0 +1,118 @@
+#include <db_ops.h>
+#include <string>
+#include <cstring>
+
+using namespace std;
+
+sqlite3 *create_db(const char *db_path, bool overwrite_file)
+{
+    if (overwrite_file)
+    {
+        if (remove(db_path) != 0 && errno != ENOENT)
+        {
+            fprintf(stderr, "Failed to remove old DB file: %s\n", strerror(errno));
+            return NULL;
+        }
+    }
+
+    sqlite3 *db = NULL;
+    int result_code = sqlite3_open(db_path, &db);
+    if (result_code != SQLITE_OK)
+    {
+        fprintf(stderr, "Failed to open DB: %s\n", sqlite3_errmsg(db));
+        sqlite3_close(db);
+        return NULL;
+    }
+    return db;
+}
+
+void create_tables(sqlite3 *db)
+{
+    const char *sql_meshes = R"(
+        CREATE TABLE IF NOT EXISTS meshes (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            vertex_count INTEGER NOT NULL,
+            index_count INTEGER NOT NULL,
+            fbx_id TEXT UNIQUE NOT NULL
+        );
+    )";
+
+    const char *sql_materials = R"(
+        CREATE TABLE IF NOT EXISTS materials (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            shader_name TEXT,
+            fbx_id TEXT UNIQUE NOT NULL,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        );
+    )";
+
+    const char *sql_vertices = R"(
+        CREATE TABLE IF NOT EXISTS vertices (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            mesh_id INTEGER NOT NULL,
+            position_x REAL NOT NULL,
+            position_y REAL NOT NULL,
+            position_z REAL NOT NULL,
+            normal_x REAL,
+            normal_y REAL,
+            normal_z REAL,
+            uv_u REAL,
+            uv_v REAL,
+            FOREIGN KEY(mesh_id) REFERENCES meshes(id) ON DELETE CASCADE
+        );
+    )";
+
+    const char *sql_indices = R"(
+        CREATE TABLE IF NOT EXISTS indices (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            mesh_id INTEGER NOT NULL,
+            value INTEGER NOT NULL,
+            FOREIGN KEY(mesh_id) REFERENCES meshes(id) ON DELETE CASCADE
+        );
+    )";
+
+    const char *sql_material_props = R"(
+        CREATE TABLE IF NOT EXISTS material_properties (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            material_id INTEGER NOT NULL,
+            key TEXT NOT NULL,
+            value TEXT NOT NULL,
+            type TEXT NOT NULL,
+            FOREIGN KEY(material_id) REFERENCES materials(id) ON DELETE CASCADE,
+            UNIQUE(material_id, key)
+        );
+    )";
+
+    const char *sql[] = {sql_meshes, sql_materials, sql_vertices, sql_indices, sql_material_props};
+    for (int i = 0; i < sizeof(sql) / sizeof(sql[0]); ++i)
+    {
+        printf("开始执行：%s", sql[i]);
+        // 检查前置条件：数据库连接和SQL语句必须有效
+        if (!db)
+        {
+            printf("db 是空的");
+            // 处理空连接错误（如log.Fatalf("db connection is NULL")）
+            return; // 或抛异常终止
+        }
+        if (!sql[i] || strlen(sql[i]) == 0)
+        {
+            printf("SQL Query 是空的");
+            // 处理空SQL错误（如log.Errorf("sql[%d] is NULL/empty", i)）
+            continue; // 或终止
+        }
+
+        char *err_msg = nullptr;
+        int ret = sqlite3_exec(db, sql[i], nullptr, nullptr, &err_msg);
+        printf("db ret: %d, err_msg: %s\n", ret, err_msg);
+        if (ret != SQLITE_OK)
+        {
+            // 必须处理错误：记录具体SQL和错误信息
+            // log.Criticalf("SQL error (i=%d): %s, SQL: %s", i, err_msg ? err_msg : "unknown", sql[i]);
+            sqlite3_free(err_msg); // 释放错误信息
+            return;                // 或根据场景决定是否继续
+        }
+        // 成功执行无需释放err_msg（sqlite3_exec成功时err_msg为NULL）
+    }
+}
diff --git a/cpp_src/fbx_parse.cpp b/cpp_src/fbx_parse.cpp
index ec808d2..baed2b8 100644
--- a/cpp_src/fbx_parse.cpp
+++ b/cpp_src/fbx_parse.cpp
@@ -2,6 +2,7 @@
 #include <stdio.h>
 // buz
 #include <fbx_wrap.h>
+#include <db_ops.h>
 
 using namespace std;
 
@@ -40,8 +41,18 @@ extern "C" {
         }
     }
 
-    void load_fbx_mesh_to_db(const FttContext* ctx) 
+    void load_fbx_mesh_to_db(FttContext* ctx) 
     {
+
+        // 按fbx名称生成 ${ctx.out_dir}/sqlite3.db
+        // 初始化db赋值到ctx.db
+        sqlite3* db = create_db((std::string(ctx->out_dir) + "/db.sqlite3").c_str(), true);
+        printf("db---> %x\n", db);
+        ctx->db = db;
+        // init db tables
+        create_tables(ctx->db);
+
+
         FbxNode* root = get_fbx_root_node(ctx->fbx_file);
         each_node(ctx, root, 0);
     }
diff --git a/cpp_src/fbx_wrap.cpp b/cpp_src/fbx_wrap.cpp
index 6bc780d..91cae15 100644
--- a/cpp_src/fbx_wrap.cpp
+++ b/cpp_src/fbx_wrap.cpp
@@ -69,6 +69,8 @@ void each_node(const FttContext* ctx, FbxNode* parent_node, int level)
             int count = load_triangles(attr, triangles);
             printf("triangles: %ld\n", triangles.size());
             // save data to database
+            sqlite3* db = ctx->db;
+            // todo save mesh into db
         }
         
     }
diff --git a/cpp_src/include/db_ops.h b/cpp_src/include/db_ops.h
new file mode 100644
index 0000000..cb99852
--- /dev/null
+++ b/cpp_src/include/db_ops.h
@@ -0,0 +1,6 @@
+#include <sqlite3.h>
+
+
+sqlite3* create_db(const char* db_path, bool overwrite_file);
+
+void create_tables(sqlite3* db);
\ No newline at end of file
diff --git a/cpp_src/include/fbx_wrap.h b/cpp_src/include/fbx_wrap.h
index 174beed..fc51a4f 100644
--- a/cpp_src/include/fbx_wrap.h
+++ b/cpp_src/include/fbx_wrap.h
@@ -23,7 +23,20 @@ void each_node(const FttContext* ctx, FbxNode* parent_node, int level);
  * @example 层级2的节点打印格式："  |-- NodeName (Type: Mesh, Children: 3)"
  */
 void print_node_info(FbxNode* node, int level);
-
+/**
+ * 从FBX文件加载并返回根节点
+ * @param fbx_path FBX文件路径（需绝对路径或相对于可执行文件路径）
+ * @return FbxNode* 成功时返回根节点指针，失败返回nullptr
+ * @note 内部会初始化FBX SDK环境并自动释放资源
+ * @warning 路径无效或文件损坏时返回空指针，需调用方检查
+ */
 FbxNode* get_fbx_root_node(const char* fbx_path);
 
-int load_triangles(fbxsdk::FbxNodeAttribute* attr, std::vector<Triangle>& triangles);
+/**
+ * 从FBX属性提取三角形数据并填充到向量
+ * @param attr FBX节点属性指针（需为Mesh类型，非Mesh类型返回0）
+ * @param triangles 输出三角形数据的向量引用（会自动清空原有数据）
+ * @return int 成功提取的三角形数量，失败返回-1（如attr为空或非Mesh类型）
+ * @note 仅处理三角形网格，四边形等多边形会被自动三角化
+ */
+int load_triangles(fbxsdk::FbxNodeAttribute* attr, std::vector<Triangle>& triangles);
\ No newline at end of file
diff --git a/cpp_src/include/tools.h b/cpp_src/include/tools.h
index d829ffb..2f88071 100644
--- a/cpp_src/include/tools.h
+++ b/cpp_src/include/tools.h
@@ -1,5 +1,12 @@
+#include <sqlite3.h>
+
 
 typedef struct {
     char* fbx_file;
     char* out_dir;
-} FttContext;
\ No newline at end of file
+
+    sqlite3* db;
+} FttContext;
+
+
+void create_tables(sqlite3* db);
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index cddae0a..dda9da7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,8 @@
 use std::{ffi::CString, os::raw::c_char};
 
 fn main() {
-    convert_fbx_to_3dtiles("/root/data/绿科-三维视图-{三维}111.fbx", "/root/data/out");
+    convert_fbx_to_3dtiles("/root/data/绿科-三维视图-{三维}111.fbx", 
+    "/root/data/out/lk");
 }
 
 #[repr(C)]
@@ -18,7 +19,7 @@ unsafe extern "C" {
 
 fn convert_fbx_to_3dtiles(fbx_path: &str, out_dir: &str) {
 
-    
+
     let ctx = &FttContext{
         fbx_file: CString::new(fbx_path).unwrap().into_raw(),
         out_dir: CString::new(out_dir).unwrap().into_raw()