diff --git a/src/streaming/event_parser/core/event_parser.rs b/src/streaming/event_parser/core/event_parser.rs
index 93a5319..b7edb91 100644
--- a/src/streaming/event_parser/core/event_parser.rs
+++ b/src/streaming/event_parser/core/event_parser.rs
@@ -1,18 +1,14 @@
 use crate::streaming::event_parser::{
-    common::{
-        filter::EventTypeFilter, high_performance_clock::elapsed_micros_since,
-        parse_swap_data_from_next_grpc_instructions, parse_swap_data_from_next_instructions,
-        EventMetadata,
-    },
-    core::{
+    DexEvent, Protocol, common::{
+        EventMetadata, filter::EventTypeFilter, high_performance_clock::elapsed_micros_since, parse_swap_data_from_next_grpc_instructions, parse_swap_data_from_next_instructions
+    }, core::{
         dispatcher::EventDispatcher,
         global_state::{
             add_bonk_dev_address, add_dev_address, is_bonk_dev_address_in_signature,
             is_dev_address_in_signature,
         },
         merger_event::merge,
-    },
-    DexEvent, Protocol,
+    }, protocols::raydium_amm_v4::parser::RAYDIUM_AMM_V4_PROGRAM_ID
 };
 use prost_types::Timestamp;
 use solana_sdk::{
@@ -327,11 +323,15 @@ impl EventParser {
 
         let is_cu_program = EventDispatcher::is_compute_budget_program(&program_id);
 
-        // 检查指令数据长度（至少需要 8 字节的 discriminator）
-        if !is_cu_program && instruction.data.len() < 8 {
+        let disc_len = match program_id {
+            RAYDIUM_AMM_V4_PROGRAM_ID => 1,
+            _ => 8,
+        };
+
+        // 检查指令数据长度（至少需要 disc_len 字节的 discriminator）
+        if !is_cu_program && instruction.data.len() < disc_len {
             return Ok(());
         }
-
         // 创建元数据
         let timestamp = block_time.unwrap_or(Timestamp { seconds: 0, nanos: 0 });
         let block_time_ms = timestamp.seconds * 1000 + (timestamp.nanos as i64) / 1_000_000;
@@ -366,8 +366,8 @@ impl EventParser {
         };
 
         // 提取 discriminator 和数据
-        let instruction_discriminator = &instruction.data[..8];
-        let instruction_data = &instruction.data[8..];
+        let instruction_discriminator = &instruction.data[..disc_len];
+        let instruction_data = &instruction.data[disc_len..];
 
         // 构建账户公钥列表
         let account_pubkeys: Vec<Pubkey> = instruction
@@ -497,8 +497,13 @@ impl EventParser {
 
         let is_cu_program = EventDispatcher::is_compute_budget_program(&program_id);
 
+        let disc_len = match program_id {
+            RAYDIUM_AMM_V4_PROGRAM_ID => 1,
+            _ => 8,
+        };
+
         // 检查指令数据长度（至少需要 8 字节的 discriminator）
-        if !is_cu_program && instruction.data.len() < 8 {
+        if !is_cu_program && instruction.data.len() < disc_len {
             return Ok(());
         }
 
@@ -536,8 +541,8 @@ impl EventParser {
         };
 
         // 提取 discriminator 和数据
-        let instruction_discriminator = &instruction.data[..8];
-        let instruction_data = &instruction.data[8..];
+        let instruction_discriminator = &instruction.data[..disc_len];
+        let instruction_data = &instruction.data[disc_len..];
 
         // 构建账户公钥列表
         let account_pubkeys: Vec<Pubkey> = instruction