diff --git a/src/common/gas_fee_strategy.rs b/src/common/gas_fee_strategy.rs
index 8154e63..7e459fd 100644
--- a/src/common/gas_fee_strategy.rs
+++ b/src/common/gas_fee_strategy.rs
@@ -21,6 +21,7 @@ pub struct GasFeeStrategyValue {
     pub cu_limit: u32,
     pub cu_price: u64,
     pub tip: f64,
+    pub data_size_limit: u32,
 }
 
 #[derive(Clone)]
@@ -42,6 +43,8 @@ impl GasFeeStrategy {
         cu_price: u64,
         buy_tip: f64,
         sell_tip: f64,
+        buy_data_size_limit: u32,
+        sell_data_size_limit: u32,
     ) {
         for swqos_type in SwqosType::values() {
             if swqos_type.eq(&SwqosType::Default) {
@@ -54,6 +57,7 @@ impl GasFeeStrategy {
                 cu_limit,
                 cu_price,
                 buy_tip,
+                buy_data_size_limit,
             );
             self.set(
                 swqos_type,
@@ -62,6 +66,7 @@ impl GasFeeStrategy {
                 cu_limit,
                 cu_price,
                 sell_tip,
+                sell_data_size_limit,
             );
         }
         self.set(
@@ -71,6 +76,7 @@ impl GasFeeStrategy {
             cu_limit,
             cu_price,
             0.0,
+            buy_data_size_limit,
         );
         self.set(
             SwqosType::Default,
@@ -79,6 +85,7 @@ impl GasFeeStrategy {
             cu_limit,
             cu_price,
             0.0,
+            sell_data_size_limit,
         );
     }
 
@@ -93,6 +100,7 @@ impl GasFeeStrategy {
         high_cu_price: u64,
         low_tip: f64,
         high_tip: f64,
+        data_size_limit: u32,
     ) {
         for swqos_type in swqos_types {
             self.del(*swqos_type, trade_type, GasFeeStrategyType::Normal);
@@ -103,6 +111,7 @@ impl GasFeeStrategy {
                 cu_limit,
                 high_cu_price,
                 low_tip,
+                data_size_limit,
             );
             self.set(
                 *swqos_type,
@@ -111,6 +120,7 @@ impl GasFeeStrategy {
                 cu_limit,
                 low_cu_price,
                 high_tip,
+                data_size_limit,
             );
         }
     }
@@ -126,6 +136,7 @@ impl GasFeeStrategy {
         high_cu_price: u64,
         low_tip: f64,
         high_tip: f64,
+        data_size_limit: u32,
     ) {
         if swqos_type.eq(&SwqosType::Default) {
             return;
@@ -138,6 +149,7 @@ impl GasFeeStrategy {
             cu_limit,
             high_cu_price,
             low_tip,
+            data_size_limit,
         );
         self.set(
             swqos_type,
@@ -146,6 +158,7 @@ impl GasFeeStrategy {
             cu_limit,
             low_cu_price,
             high_tip,
+            data_size_limit,
         );
     }
 
@@ -158,6 +171,8 @@ impl GasFeeStrategy {
         cu_price: u64,
         buy_tip: f64,
         sell_tip: f64,
+        buy_data_size_limit: u32,
+        sell_data_size_limit: u32,
     ) {
         for swqos_type in swqos_types {
             self.del_all(*swqos_type, TradeType::Buy);
@@ -169,6 +184,7 @@ impl GasFeeStrategy {
                 cu_limit,
                 cu_price,
                 buy_tip,
+                buy_data_size_limit,
             );
             self.set(
                 *swqos_type,
@@ -177,6 +193,7 @@ impl GasFeeStrategy {
                 cu_limit,
                 cu_price,
                 sell_tip,
+                sell_data_size_limit,
             );
         }
     }
@@ -188,6 +205,8 @@ impl GasFeeStrategy {
         cu_price: u64,
         buy_tip: f64,
         sell_tip: f64,
+        buy_data_size_limit: u32,
+        sell_data_size_limit: u32,
     ) {
         self.del_all(swqos_type, TradeType::Buy);
         self.del_all(swqos_type, TradeType::Sell);
@@ -198,6 +217,7 @@ impl GasFeeStrategy {
             cu_limit,
             cu_price,
             buy_tip,
+            buy_data_size_limit,
         );
         self.set(
             swqos_type,
@@ -206,6 +226,7 @@ impl GasFeeStrategy {
             cu_limit,
             cu_price,
             sell_tip,
+            sell_data_size_limit,
         );
     }
 
@@ -217,6 +238,7 @@ impl GasFeeStrategy {
         cu_limit: u32,
         cu_price: u64,
         tip: f64,
+        data_size_limit: u32,
     ) {
         if strategy_type == GasFeeStrategyType::Normal {
             self.del(swqos_type, trade_type, GasFeeStrategyType::HighTipLowCuPrice);
@@ -228,7 +250,7 @@ impl GasFeeStrategy {
             let mut new_map = (**current_map).clone();
             new_map.insert(
                 (swqos_type, trade_type, strategy_type),
-                GasFeeStrategyValue { cu_limit, cu_price, tip },
+                GasFeeStrategyValue { cu_limit, cu_price, tip, data_size_limit },
             );
             Arc::new(new_map)
         });
diff --git a/src/lib.rs b/src/lib.rs
index d56ae06..f95b490 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -380,7 +380,10 @@ impl SolanaTrade {
             slippage_basis_points: params.slippage_basis_points,
             address_lookup_table_account: params.address_lookup_table_account,
             recent_blockhash: params.recent_blockhash,
-            data_size_limit: 256 * 1024,
+            data_size_limit: params.gas_fee_strategy.get_strategies(TradeType::Buy)
+                .get(0)
+                .map(|(_, _, v)| v.data_size_limit)
+                .unwrap_or(256 * 1024),
             wait_transaction_confirmed: params.wait_transaction_confirmed,
             protocol_params: protocol_params.clone(),
             open_seed_optimize: self.use_seed_optimize, // 使用全局seed优化配置
@@ -484,7 +487,10 @@ impl SolanaTrade {
             swqos_clients: self.swqos_clients.clone(),
             middleware_manager: self.middleware_manager.clone(),
             durable_nonce: params.durable_nonce,
-            data_size_limit: 0,
+            data_size_limit: params.gas_fee_strategy.get_strategies(TradeType::Sell)
+                .get(0)
+                .map(|(_, _, v)| v.data_size_limit)
+                .unwrap_or(0),
             create_input_mint_ata: false,
             close_input_mint_ata: params.close_mint_token_ata,
             create_output_mint_ata: params.create_output_token_ata,
diff --git a/src/trading/common/compute_budget_manager.rs b/src/trading/common/compute_budget_manager.rs
index 2cd8325..b3edaca 100755
--- a/src/trading/common/compute_budget_manager.rs
+++ b/src/trading/common/compute_budget_manager.rs
@@ -41,14 +41,20 @@ pub fn compute_budget_instructions(
     // Cache miss, generate new instructions
     let mut insts = SmallVec::<[Instruction; 3]>::new();
 
-    if is_buy {
+    // Only add data_size_limit instruction if > 0 and is_buy
+    if is_buy && data_size_limit > 0 {
         insts.push(ComputeBudgetInstruction::set_loaded_accounts_data_size_limit(data_size_limit));
     }
 
-    insts.extend([
-        ComputeBudgetInstruction::set_compute_unit_price(unit_price),
-        ComputeBudgetInstruction::set_compute_unit_limit(unit_limit),
-    ]);
+    // Only add compute unit price instruction if > 0
+    if unit_price > 0 {
+        insts.push(ComputeBudgetInstruction::set_compute_unit_price(unit_price));
+    }
+
+    // Only add compute unit limit instruction if > 0
+    if unit_limit > 0 {
+        insts.push(ComputeBudgetInstruction::set_compute_unit_limit(unit_limit));
+    }
 
     // Store result in cache
     let insts_clone = insts.clone();