diff --git a/ree-cookie-canister/src/canister.rs b/ree-cookie-canister/src/canister.rs
index 4ad32b7..509b23c 100644
--- a/ree-cookie-canister/src/canister.rs
+++ b/ree-cookie-canister/src/canister.rs
@@ -12,9 +12,9 @@ use crate::{
     memory::{
         mutate_state, read_state, set_state, ADDRESS_PRINCIPLE_MAP, BLOCKS, GAMER, TX_RECORDS,
     },
-    state::{ExchangeState, GameStatus, PoolState},
+    state::{ExchangeState, PoolState},
     utils::{
-        calculate_premine_rune_amount, tweak_pubkey_with_empty, AddLiquidityInfo, RegisterInfo,
+        calculate_premine_rune_amount, tweak_pubkey_with_empty, AddLiquidityInfo, ExecuteTxGuard, RegisterInfo
     },
     ExchangeError, Seconds, MIN_BTC_VALUE,
 };
@@ -291,6 +291,9 @@ pub async fn execute_tx(args: ExecuteTxArgs) -> ExecuteTxResponse {
         output_coins,
     } = intention;
 
+    let _guard = ExecuteTxGuard::new(pool_address.clone())
+    .ok_or(format!("Pool {0} Executing", pool_address).to_string())?;
+
     read_state(|s| {
         return s
             .address
diff --git a/ree-cookie-canister/src/memory.rs b/ree-cookie-canister/src/memory.rs
index 09c4b08..2c318f9 100644
--- a/ree-cookie-canister/src/memory.rs
+++ b/ree-cookie-canister/src/memory.rs
@@ -1,4 +1,5 @@
 pub(crate) use std::cell::RefCell;
+use std::collections::HashSet;
 
 use candid::Principal;
 use ic_stable_structures::{
@@ -52,6 +53,8 @@ thread_local! {
             MEMORY_MANAGER.with(|m| m.borrow().get(TX_RECORDS_MEMORY_ID)),
         )
     );
+ 
+    pub static EXECUTING_POOLS: RefCell<HashSet<String>> = RefCell::new(HashSet::new()); 
 
 }
 
@@ -94,4 +97,4 @@ where
     let state = get_state();
     let r = f(&state);
     r
-}
+}
\ No newline at end of file
diff --git a/ree-cookie-canister/src/state.rs b/ree-cookie-canister/src/state.rs
index b19eafb..de67818 100644
--- a/ree-cookie-canister/src/state.rs
+++ b/ree-cookie-canister/src/state.rs
@@ -1,7 +1,6 @@
 use ic_cdk::api::management_canister::bitcoin::Satoshi;
 use ic_stable_structures::storable::Bound;
 use ic_stable_structures::Storable;
-use itertools::Itertools;
 use ree_types::{CoinBalance, CoinId, InputCoin, OutputCoin};
 use std::borrow::Cow;
 
diff --git a/ree-cookie-canister/src/utils.rs b/ree-cookie-canister/src/utils.rs
index 9546bc4..3d6dd67 100644
--- a/ree-cookie-canister/src/utils.rs
+++ b/ree-cookie-canister/src/utils.rs
@@ -1,7 +1,33 @@
 use ic_cdk::api::management_canister::bitcoin::{BitcoinNetwork, Satoshi};
 use ree_types::bitcoin::key::{Secp256k1, TapTweak, TweakedPublicKey};
 
-use crate::{memory::read_state, *};
+use crate::{
+    memory::{read_state, EXECUTING_POOLS},
+    *,
+};
+
+#[must_use]
+pub struct ExecuteTxGuard(String);
+
+impl ExecuteTxGuard {
+    pub fn new(pool_address: String) -> Option<Self> {
+        EXECUTING_POOLS.with(|executing_pools| {
+            if executing_pools.borrow().contains(&pool_address) {
+                return None;
+            }
+            executing_pools.borrow_mut().insert(pool_address.clone());
+            return Some(ExecuteTxGuard(pool_address));
+        })
+    }
+}
+
+impl Drop for ExecuteTxGuard {
+    fn drop(&mut self) {
+        EXECUTING_POOLS.with_borrow_mut(|executing_pools| {
+            executing_pools.remove(&self.0);
+        });
+    }
+}
 
 pub(crate) fn tweak_pubkey_with_empty(untweaked: Pubkey) -> TweakedPublicKey {
     let secp = Secp256k1::new();