diff --git a/Cargo.toml b/Cargo.toml
index 93478f8..8c5ee44 100755
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,6 +25,7 @@ serde-big-array = "0.5.1"
 futures = "0.3.32"
 bincode = "1.3"
 anyhow = "1.0.102"
+bs58 = "0.5.1"
 yellowstone-grpc-client = {  version = "10.2.0" }
 yellowstone-grpc-proto = {  version = "10.1.1" }
 tokio = { version = "1.49.0", features = ["full", "rt-multi-thread"]}
diff --git a/src/streaming/event_parser/common/types.rs b/src/streaming/event_parser/common/types.rs
index 088bcf4..b5fedaa 100755
--- a/src/streaming/event_parser/common/types.rs
+++ b/src/streaming/event_parser/common/types.rs
@@ -312,9 +312,9 @@ pub struct EventMetadata {
     pub swap_data: Option<SwapData>,
     pub outer_index: i64,
     pub inner_index: Option<i64>,
-    /// Transaction message recent blockhash (32 bytes), when available.
+    /// Transaction message recent blockhash as base58 string (same encoding as signature), when available.
     #[serde(default)]
-    pub recent_blockhash: Option<Vec<u8>>,
+    pub recent_blockhash: Option<String>,
 }
 
 impl EventMetadata {
@@ -331,7 +331,7 @@ impl EventMetadata {
         inner_index: Option<i64>,
         recv_us: i64,
         tx_index: Option<u64>,
-        recent_blockhash: Option<Vec<u8>>,
+        recent_blockhash: Option<String>,
     ) -> Self {
         Self {
             signature,
diff --git a/src/streaming/event_parser/core/event_parser.rs b/src/streaming/event_parser/core/event_parser.rs
index a4f576f..d7703a0 100644
--- a/src/streaming/event_parser/core/event_parser.rs
+++ b/src/streaming/event_parser/core/event_parser.rs
@@ -85,7 +85,7 @@ impl EventParser {
                 let recent_blockhash = if message.recent_blockhash.is_empty() {
                     None
                 } else {
-                    Some(message.recent_blockhash.clone())
+                    Some(bs58::encode(&message.recent_blockhash).into_string())
                 };
                 Self::parse_instruction_events_from_grpc_transaction(
                     protocols,
@@ -134,7 +134,7 @@ impl EventParser {
         });
         // 获取交易的指令和账户
         let compiled_instructions = transaction.message.instructions();
-        let recent_blockhash = Some(transaction.message.recent_blockhash().to_bytes().to_vec());
+        let recent_blockhash = Some(transaction.message.recent_blockhash().to_string());
         let mut accounts: Vec<Pubkey> = accounts.to_vec();
         // 检查交易中是否包含程序
         let has_program = accounts
@@ -223,7 +223,7 @@ impl EventParser {
         inner_instructions: &[yellowstone_grpc_proto::prelude::InnerInstructions],
         bot_wallet: Option<Pubkey>,
         tx_index: Option<u64>,
-        recent_blockhash: Option<Vec<u8>>,
+        recent_blockhash: Option<String>,
         callback: Arc<dyn for<'a> Fn(&'a DexEvent) + Send + Sync>,
     ) -> anyhow::Result<()> {
         // 获取交易的指令和账户
@@ -320,7 +320,7 @@ impl EventParser {
         inner_index: Option<i64>,
         bot_wallet: Option<Pubkey>,
         tx_index: Option<u64>,
-        recent_blockhash: Option<&[u8]>,
+        recent_blockhash: Option<&str>,
         inner_instructions: Option<&yellowstone_grpc_proto::prelude::InnerInstructions>,
         callback: Arc<dyn for<'a> Fn(&'a DexEvent) + Send + Sync>,
     ) -> anyhow::Result<()> {
@@ -360,7 +360,7 @@ impl EventParser {
             inner_index,
             recv_us,
             tx_index,
-            recent_blockhash.map(|s| s.to_vec()),
+            recent_blockhash.map(|s| s.to_string()),
         );
 
         if is_cu_program {
@@ -479,7 +479,7 @@ impl EventParser {
         inner_index: Option<i64>,
         bot_wallet: Option<Pubkey>,
         tx_index: Option<u64>,
-        recent_blockhash: Option<&[u8]>,
+        recent_blockhash: Option<&str>,
         inner_instructions: Option<&InnerInstructions>,
         callback: Arc<dyn for<'a> Fn(&'a DexEvent) + Send + Sync>,
     ) -> anyhow::Result<()> {
@@ -520,7 +520,7 @@ impl EventParser {
             inner_index,
             recv_us,
             tx_index,
-            recent_blockhash.map(|s| s.to_vec()),
+            recent_blockhash.map(|s| s.to_string()),
         );
 
         if is_cu_program {