diff --git a/Cargo.toml b/Cargo.toml
index 03c4c56..a21dd6e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ members = [
     "examples/notify-test",
     "examples/call_native",
     "examples/oracle",
+    "examples/gov",
     "examples/bridge"
 ]
 
diff --git a/examples/gov/Cargo.toml b/examples/gov/Cargo.toml
new file mode 100644
index 0000000..1b3c31f
--- /dev/null
+++ b/examples/gov/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "gov"
+version = "0.1.0"
+authors = ["lucas7788 <sishsh@163.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib"]
+path = "src/lib.rs"
+
+[dependencies]
+ontio-std = {path="../../ontio-std", features=["bump-alloc"]}
+
+[features]
+mock = ["ontio-std/mock"]
diff --git a/examples/gov/src/lib.rs b/examples/gov/src/lib.rs
new file mode 100644
index 0000000..6a3eca0
--- /dev/null
+++ b/examples/gov/src/lib.rs
@@ -0,0 +1,67 @@
+#![no_std]
+#![feature(proc_macro_hygiene)]
+extern crate ontio_std as ostd;
+use ostd::abi::{Sink, Source};
+use ostd::contract::governance::un_authorize_for_peer;
+use ostd::contract::{governance, ont};
+use ostd::prelude::*;
+use ostd::runtime;
+use ostd::runtime::address;
+
+fn authorize_for_peer_transfer_from(user: &Address, amt: U128, peer_pub_key: &str) -> bool {
+    let this = address();
+    ont::transfer(user, &this, amt);
+    governance::authorize_for_peer_transfer_from(&this, amt, peer_pub_key)
+}
+
+fn authorize_for_peer(user: &Address, amt: U128, peer_pub_key: &str) -> bool {
+    governance::authorize_for_peer(user, amt, peer_pub_key)
+}
+
+fn withdraw(user: &Address, amt: U128, peer_pub_key: &str) -> bool {
+    governance::withdraw(user, amt, peer_pub_key)
+}
+
+fn withdraw_ong(user: &Address) -> bool {
+    governance::withdraw_ong(user)
+}
+
+#[no_mangle]
+pub fn invoke() {
+    let input = runtime::input();
+    let mut source = Source::new(&input);
+    let action = source.read().unwrap();
+    let mut sink = Sink::new(12);
+    match action {
+        "authorize_for_peer_transfer_from" => {
+            let (user, amt, peer_pub_key) = source.read().unwrap();
+            sink.write(authorize_for_peer_transfer_from(user, amt, peer_pub_key));
+        }
+        "authorize_for_peer" => {
+            let (user, amt, peer_pub_key) = source.read().unwrap();
+            sink.write(authorize_for_peer(user, amt, peer_pub_key))
+        }
+        "un_authorize_for_peer" => {
+            let (user, amt, peer_pub_key) = source.read().unwrap();
+            sink.write(un_authorize_for_peer(user, amt, peer_pub_key))
+        }
+        "withdraw" => {
+            let (user, amt, peer_pub_key) = source.read().unwrap();
+            sink.write(withdraw(user, amt, peer_pub_key));
+        }
+        "withdraw_ong" => {
+            let user = source.read().unwrap();
+            sink.write(withdraw_ong(user));
+        }
+        _ => panic!("unsupported action!"),
+    }
+    runtime::ret(sink.bytes())
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}
diff --git a/ontio-std/Cargo.toml b/ontio-std/Cargo.toml
index 7d2f594..43e0c99 100644
--- a/ontio-std/Cargo.toml
+++ b/ontio-std/Cargo.toml
@@ -21,6 +21,7 @@ uint = {version = "0.8.5", default-features=false}
 
 [dev-dependencies]
 rand = "0.7.0"
+etcommon-hexutil = { version = "0.2.4", default-features = false }
 
 [features]
 std = []
diff --git a/ontio-std/src/contract.rs b/ontio-std/src/contract.rs
index a73ae65..dc74abf 100644
--- a/ontio-std/src/contract.rs
+++ b/ontio-std/src/contract.rs
@@ -1,5 +1,186 @@
 use crate::prelude::*;
 
+pub mod governance {
+    use crate::abi::{Encoder, Sink, Source};
+    use crate::macros::base58;
+    use crate::prelude::*;
+    use crate::runtime::call_contract;
+    use crate::types::u128_to_neo_bytes;
+
+    const VERSION: u8 = 0;
+    pub const GOV_CONTRACT_ADDRESS: Address = base58!("AFmseVrdL9f9oyCzZefL9tG6UbviEH9ugK");
+
+    pub struct AuthorizeForPeerParam<'a> {
+        addr: &'a Address,
+        peer_pubkey_list: &'a [&'a str],
+        pos_list: &'a [u32],
+    }
+
+    impl<'a> AuthorizeForPeerParam<'a> {
+        pub fn new(addr: &'a Address, pos_list: &'a [u32], peer_pub_key: &'a [&str]) -> Self {
+            AuthorizeForPeerParam { addr, peer_pubkey_list: peer_pub_key, pos_list }
+        }
+    }
+
+    impl<'a> Encoder for AuthorizeForPeerParam<'a> {
+        fn encode(&self, sink: &mut Sink) {
+            sink.write_var_bytes(self.addr.as_bytes());
+            sink.write_native_varuint(self.peer_pubkey_list.len() as u64);
+            for &pk in self.peer_pubkey_list.iter() {
+                sink.write(pk);
+            }
+            sink.write_native_varuint(self.pos_list.len() as u64);
+            for pos in self.pos_list.iter() {
+                sink.write(u128_to_neo_bytes(U128::new(*pos as u128)));
+            }
+        }
+    }
+
+    pub fn authorize_for_peer(addr: &Address, amt: U128, peer_pub_key: &str) -> bool {
+        let mut sink = Sink::new(64);
+        let pos_list = vec![amt.raw() as u32];
+        let peer_pub_key = &[peer_pub_key];
+        let a = AuthorizeForPeerParam::new(addr, pos_list.as_slice(), peer_pub_key);
+        sink.write(a);
+
+        let mut sink_param = Sink::new(64);
+        sink_param.write(VERSION);
+        sink_param.write("authorizeForPeer");
+        sink_param.write(sink.bytes());
+
+        let output = call_contract(&GOV_CONTRACT_ADDRESS, sink_param.bytes());
+        let mut source = Source::new(output.as_slice());
+        source.read_bool().unwrap_or_default()
+    }
+
+    //Authorize for a node by depositing ONT in this governance contract, used by contracts
+    pub fn authorize_for_peer_transfer_from(addr: &Address, amt: U128, peer_pub_key: &str) -> bool {
+        let mut sink = Sink::new(64);
+        let pos_list = &[amt.raw() as u32];
+        let peer_pub_key = &[peer_pub_key];
+        let a = AuthorizeForPeerParam::new(addr, pos_list, peer_pub_key);
+        sink.write(a);
+        let mut sink_param = Sink::new(64);
+        sink_param.write(VERSION);
+        sink_param.write("authorizeForPeerTransferFrom");
+        sink_param.write(sink.bytes());
+
+        let output = call_contract(&GOV_CONTRACT_ADDRESS, sink_param.bytes());
+        let mut source = Source::new(output.as_slice());
+        source.read_bool().unwrap_or_default()
+    }
+
+    //UnAuthorize for a node by redeeming ONT from this governance contract
+    pub fn un_authorize_for_peer(addr: &Address, amt: U128, peer_pub_key: &str) -> bool {
+        let mut sink = Sink::new(64);
+        let pos_list = vec![amt.raw() as u32];
+        let peer_pub_key = &[peer_pub_key];
+        let a = AuthorizeForPeerParam::new(addr, pos_list.as_slice(), peer_pub_key);
+        sink.write(a);
+
+        let mut sink_param = Sink::new(64);
+        sink_param.write(VERSION);
+        sink_param.write("unAuthorizeForPeer");
+        sink_param.write(sink.bytes());
+
+        let output = call_contract(&GOV_CONTRACT_ADDRESS, sink_param.bytes());
+        let mut source = Source::new(output.as_slice());
+        source.read_bool().unwrap_or_default()
+    }
+
+    struct WithdrawParam<'a> {
+        addr: &'a Address,
+        peer_pubkey_list: &'a [&'a str],
+        withdraw_list: &'a [u32],
+    }
+    impl<'a> Encoder for WithdrawParam<'a> {
+        fn encode(&self, sink: &mut Sink) {
+            sink.write_var_bytes(self.addr.as_bytes());
+            sink.write_var_bytes(
+                u128_to_neo_bytes(U128::new(self.peer_pubkey_list.len() as u128)).as_slice(),
+            );
+            self.peer_pubkey_list.iter().for_each(|peer_pubkey| sink.write(peer_pubkey));
+            sink.write_var_bytes(
+                u128_to_neo_bytes(U128::new(self.withdraw_list.len() as u128)).as_slice(),
+            );
+            self.withdraw_list.iter().for_each(|withdraw| {
+                sink.write_var_bytes(u128_to_neo_bytes(U128::new(*withdraw as u128)).as_slice())
+            });
+        }
+    }
+
+    //Withdraw unfreezed ONT deposited in this governance contract.
+    pub fn withdraw(addr: &Address, amt: U128, peer_pub_key: &str) -> bool {
+        let mut sink = Sink::new(80);
+        sink.write(WithdrawParam {
+            addr,
+            peer_pubkey_list: &[peer_pub_key],
+            withdraw_list: &[amt.raw() as u32],
+        });
+        let mut sink_param = Sink::new(64);
+        sink_param.write(VERSION);
+        sink_param.write("withdraw");
+        sink_param.write(sink.bytes());
+
+        let output = call_contract(&GOV_CONTRACT_ADDRESS, sink_param.bytes());
+        let mut source = Source::new(output.as_slice());
+        source.read_bool().unwrap_or_default()
+    }
+
+    struct WithdrawOngParam<'a> {
+        addr: &'a Address,
+    }
+    impl<'a> Encoder for WithdrawOngParam<'a> {
+        fn encode(&self, sink: &mut Sink) {
+            sink.write_var_bytes(self.addr.as_bytes())
+        }
+    }
+
+    //Withdraw unbounded ONG according to deposit ONT in this governance contract
+    pub fn withdraw_ong(addr: &Address) -> bool {
+        let mut sink = Sink::new(64);
+        sink.write(WithdrawOngParam { addr });
+        let mut sink_param = Sink::new(64);
+        sink_param.write(VERSION);
+        sink_param.write("withdrawOng");
+        sink_param.write(sink.bytes());
+
+        let output = call_contract(&GOV_CONTRACT_ADDRESS, sink_param.bytes());
+        let mut source = Source::new(output.as_slice());
+        source.read_bool().unwrap_or_default()
+    }
+
+    #[test]
+    pub fn test_struct() {
+        let data = [
+            0x1b, 0x25, 0xfb, 0x79, 0xe6, 0x1d, 0x58, 0x60, 0x97, 0xef, 0xd9, 0xee, 0x89, 0xa5,
+            0xab, 0xbf, 0x22, 0x27, 0xa2, 0xba,
+        ];
+        let ap = AuthorizeForPeerParam {
+            addr: &Address::new(data),
+            peer_pubkey_list: &[&"test".to_string()],
+            pos_list: &[128u32],
+        };
+        let mut sink = Sink::new(64);
+        sink.write(ap);
+        println!("AuthorizeForPeerParam:{}", hexutil::to_hex(sink.bytes()));
+
+        let wp = WithdrawParam {
+            addr: &Address::repeat_byte(2),
+            peer_pubkey_list: &["test"],
+            withdraw_list: &[128u32],
+        };
+        let mut sink = Sink::new(64);
+        sink.write(wp);
+        println!("WithdrawParam:{}", hexutil::to_hex(sink.bytes()));
+
+        let wp = WithdrawOngParam { addr: &Address::repeat_byte(2) };
+        let mut sink = Sink::new(64);
+        sink.write(wp);
+        println!("WithdrawOngParam:{}", hexutil::to_hex(sink.bytes()));
+    }
+}
+
 pub mod neo {
     use crate::prelude::*;