diff --git a/phper-doc/doc/_06_module/_07_register_interface/index.md b/phper-doc/doc/_06_module/_07_register_interface/index.md
index 53d8d1d6..ecb3a94c 100644
--- a/phper-doc/doc/_06_module/_07_register_interface/index.md
+++ b/phper-doc/doc/_06_module/_07_register_interface/index.md
@@ -58,7 +58,7 @@ interface Foo extends ArrayAccess, Iterator {}
 
 ## Add methods
 
-Interface can add public abstract methods.
+Interface can add public abstract methods, and public static abstract methods.
 
 ```rust,no_run
 use phper::classes::{InterfaceEntity, ClassEntry, Visibility};
@@ -68,6 +68,7 @@ use phper::values::ZVal;
 
 let mut foo = InterfaceEntity::new("Foo");
 foo.add_method("doSomethings").argument(Argument::new("name"));
+foo.add_static_method("test");
 ```
 
 Note that abstract has no method body, so you don't need to add the handler to the method.
diff --git a/phper/src/classes.rs b/phper/src/classes.rs
index dc5a103a..5ce729cc 100644
--- a/phper/src/classes.rs
+++ b/phper/src/classes.rs
@@ -837,6 +837,15 @@ impl InterfaceEntity {
         self.method_entities.last_mut().unwrap()
     }
 
+    /// Add static member method to interface.
+    pub fn add_static_method(&mut self, name: impl Into<String>) -> &mut MethodEntity {
+        let mut entity = MethodEntity::new(name, None, Visibility::Public);
+        entity.set_vis_abstract();
+        entity.set_vis_static();
+        self.method_entities.push(entity);
+        self.method_entities.last_mut().unwrap()
+    }
+
     /// Add constant to interface
     pub fn add_constant(&mut self, name: impl Into<String>, value: impl Into<Scalar>) {
         let constant = ConstantEntity::new(name, value);
diff --git a/tests/integration/src/classes.rs b/tests/integration/src/classes.rs
index 1dd72246..1bcea295 100644
--- a/tests/integration/src/classes.rs
+++ b/tests/integration/src/classes.rs
@@ -181,6 +181,8 @@ fn integrate_i_bar(module: &mut Module) {
         .add_method("doSomethings")
         .argument(Argument::new("job_name"));
 
+    interface.add_static_method("myStaticMethod");
+
     module.add_interface(interface);
 }
 
diff --git a/tests/integration/tests/php/classes.php b/tests/integration/tests/php/classes.php
index 99c01071..e0ba75e7 100644
--- a/tests/integration/tests/php/classes.php
+++ b/tests/integration/tests/php/classes.php
@@ -65,6 +65,12 @@
 $doSomethings = $interface->getMethod("doSomethings");
 assert_true($doSomethings->isPublic());
 assert_true($doSomethings->isAbstract());
+assert_false($doSomethings->isStatic());
+
+$myStaticMethod = $interface->getMethod("myStaticMethod");
+assert_true($myStaticMethod->isPublic());
+assert_true($myStaticMethod->isAbstract());
+assert_true($myStaticMethod->isStatic());
 
 // Test get or set static properties.
 assert_eq(IntegrationTest\PropsHolder::$foo, "bar");