diff --git a/Cargo.lock b/Cargo.lock
index 437b95e2..520cbc62 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -701,6 +701,10 @@ version = "0.1.0"
 [[package]]
 name = "coco_swagger"
 version = "0.1.0"
+dependencies = [
+ "core_model",
+ "plugin_interface",
+]
 
 [[package]]
 name = "console"
@@ -2119,6 +2123,9 @@ checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 [[package]]
 name = "plugin_interface"
 version = "0.1.0"
+dependencies = [
+ "core_model",
+]
 
 [[package]]
 name = "plugin_manager"
diff --git a/plugin_interface/Cargo.toml b/plugin_interface/Cargo.toml
index 0643191e..ff0dda2f 100644
--- a/plugin_interface/Cargo.toml
+++ b/plugin_interface/Cargo.toml
@@ -7,3 +7,8 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+
+[dependencies.core_model]
+path = "../core_model"
+
diff --git a/plugin_interface/src/interface.rs b/plugin_interface/src/interface.rs
new file mode 100644
index 00000000..c2f1db08
--- /dev/null
+++ b/plugin_interface/src/interface.rs
@@ -0,0 +1,13 @@
+use core_model::CocoConfig;
+
+pub trait PluginInterface {
+    /// name of plugins
+    /// should start with `coco.`, such as `coco.swagger`
+    fn name(&self) -> &'static str;
+    /// event for load plugin
+    fn on_plugin_load(&self) {}
+    /// event of unload plugin
+    fn on_plugin_unload(&self) {}
+    /// execute plugin
+    fn execute(&self, config: CocoConfig);
+}
diff --git a/plugin_interface/src/lib.rs b/plugin_interface/src/lib.rs
index adc2917e..b854b525 100644
--- a/plugin_interface/src/lib.rs
+++ b/plugin_interface/src/lib.rs
@@ -1 +1,2 @@
-pub mod plugin_interface;
+pub use interface::PluginInterface;
+pub mod interface;
diff --git a/plugin_interface/src/plugin_interface.rs b/plugin_interface/src/plugin_interface.rs
deleted file mode 100644
index d1fbec98..00000000
--- a/plugin_interface/src/plugin_interface.rs
+++ /dev/null
@@ -1 +0,0 @@
-pub trait PluginInterface {}
diff --git a/plugins/coco_swagger/Cargo.toml b/plugins/coco_swagger/Cargo.toml
index a9e56e15..282a74f7 100644
--- a/plugins/coco_swagger/Cargo.toml
+++ b/plugins/coco_swagger/Cargo.toml
@@ -7,3 +7,9 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[dependencies.core_model]
+path = "../../core_model"
+
+[dependencies.plugin_interface]
+path = "../../plugin_interface"
diff --git a/plugins/coco_swagger/src/lib.rs b/plugins/coco_swagger/src/lib.rs
new file mode 100644
index 00000000..9553c7aa
--- /dev/null
+++ b/plugins/coco_swagger/src/lib.rs
@@ -0,0 +1,18 @@
+use core_model::CocoConfig;
+use plugin_interface::PluginInterface;
+
+pub struct CocoSwagger {}
+
+impl PluginInterface for CocoSwagger {
+    fn name(&self) -> &'static str {
+        "coco.swagger"
+    }
+
+    fn on_plugin_load(&self) {}
+
+    fn on_plugin_unload(&self) {}
+
+    fn execute(&self, config: CocoConfig) {
+        println!("{:?}", config);
+    }
+}
diff --git a/plugins/coco_swagger/src/main.rs b/plugins/coco_swagger/src/main.rs
deleted file mode 100644
index e7a11a96..00000000
--- a/plugins/coco_swagger/src/main.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}