diff --git a/Cargo.lock b/Cargo.lock
index e985f483efb..6ec2a2d2764 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1774,15 +1774,6 @@ dependencies = [
  "shlex 2.0.1",
 ]
 
-[[package]]
-name = "cedarwood"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0524a528a6a0288df1863c3c20fe92c301875b4941e7b6c4b394ab08c5a4c55"
-dependencies = [
- "smallvec",
-]
-
 [[package]]
 name = "census"
 version = "0.4.2"
@@ -1927,7 +1918,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c7d8d1efd5109b9c1cd3b7966bd071cdfb53bb6eb0b22a473a68c2f70a11a1eb"
 dependencies = [
  "parse-zoneinfo",
- "phf_codegen 0.12.1",
+ "phf_codegen",
  "phf_shared 0.12.1",
  "uncased",
 ]
@@ -7343,25 +7334,19 @@ dependencies = [
 
 [[package]]
 name = "jieba-macros"
-version = "0.10.1"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46adade69b634535a8f495cf87710ed893cff53e1dbc9dd750c2ab81c5defb82"
-dependencies = [
- "phf_codegen 0.13.1",
-]
+checksum = "2987cf45b1bfdb4ff1f6a814b1aa2ad6361f4ff43bf353a9bd29f391a9568f70"
 
 [[package]]
 name = "jieba-rs"
-version = "0.10.1"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11b53580aaa8ec8b713da271da434f8947409242c537a9ab3f7b76bdbb19e8a9"
+checksum = "0a3a7d02ea31e6fc6f2fe10495dc7c5efcf381e1f21d7172f58ba792efa1c2fd"
 dependencies = [
  "bytecount",
- "cedarwood",
  "include-flate",
  "jieba-macros",
- "phf 0.13.1",
- "regex",
  "rustc-hash",
 ]
 
@@ -10774,20 +10759,10 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "efbdcb6f01d193b17f0b9c3360fa7e0e620991b193ff08702f78b3ce365d7e61"
 dependencies = [
- "phf_generator 0.12.1",
+ "phf_generator",
  "phf_shared 0.12.1",
 ]
 
-[[package]]
-name = "phf_codegen"
-version = "0.13.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49aa7f9d80421bca176ca8dbfebe668cc7a2684708594ec9f3c0db0805d5d6e1"
-dependencies = [
- "phf_generator 0.13.1",
- "phf_shared 0.13.1",
-]
-
 [[package]]
 name = "phf_generator"
 version = "0.12.1"
@@ -10798,23 +10773,13 @@ dependencies = [
  "phf_shared 0.12.1",
 ]
 
-[[package]]
-name = "phf_generator"
-version = "0.13.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "135ace3a761e564ec88c03a77317a7c6b80bb7f7135ef2544dbe054243b89737"
-dependencies = [
- "fastrand",
- "phf_shared 0.13.1",
-]
-
 [[package]]
 name = "phf_macros"
 version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d713258393a82f091ead52047ca779d37e5766226d009de21696c4e667044368"
 dependencies = [
- "phf_generator 0.12.1",
+ "phf_generator",
  "phf_shared 0.12.1",
  "proc-macro2",
  "quote",
@@ -14895,9 +14860,9 @@ dependencies = [
 
 [[package]]
 name = "tantivy-jieba"
-version = "0.20.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3392170e86f1c387170aba7d171a466ffdc98a8b55b006e19ac64b123a7b690a"
+checksum = "25cf6c5eb9419d7da9aacf5e184863b9ed476c478de0e196729f16124e716dd1"
 dependencies = [
  "jieba-rs",
  "lazy_static",
diff --git a/src/index/Cargo.toml b/src/index/Cargo.toml
index 078f9e42c56..2458a6591af 100644
--- a/src/index/Cargo.toml
+++ b/src/index/Cargo.toml
@@ -23,7 +23,7 @@ fst.workspace = true
 futures.workspace = true
 greptime-proto.workspace = true
 itertools.workspace = true
-jieba-rs = "0.10"
+jieba-rs = "0.11"
 lazy_static.workspace = true
 mockall.workspace = true
 pin-project.workspace = true
@@ -37,7 +37,7 @@ serde_json.workspace = true
 snafu.workspace = true
 store-api.workspace = true
 tantivy = { version = "0.26", features = ["zstd-compression"] }
-tantivy-jieba = "0.20"
+tantivy-jieba = "0.21"
 tokio.workspace = true
 tokio-util.workspace = true
 uuid.workspace = true
diff --git a/src/index/src/fulltext_index/tokenizer.rs b/src/index/src/fulltext_index/tokenizer.rs
index e6752a40420..0a1cc47aa8e 100644
--- a/src/index/src/fulltext_index/tokenizer.rs
+++ b/src/index/src/fulltext_index/tokenizer.rs
@@ -262,6 +262,8 @@ mod tests {
         let text = "[2026/04/09/ 13:56:11.031]2026-04-09 13:56:11.031 - [ trace_id=340a6a44b0bd8e37bb7697ss7da61ff0 span_id=085ff5ttf1e0a23b trace_flags=01] - [http-nio-8081-exec-16] INFO c.h.p.xx.web.service.impl.CCCXForwardKKKServiceImpl.pushout(188) - 登录手机号18888888888的动态key：829889AC8 ship_ship ship__ship _ __ __IDENTIFIER__ _ship ship_ EOF";
         let tokens = tokenizer.tokenize(text);
 
+        // Jieba 0.11 preserves ASCII compounds and emits searchable alphabetic parts.
+        // The underscore fallback also retains leading, trailing, and repeated underscores.
         assert_eq!(
             tokens,
             vec![
@@ -271,36 +273,34 @@ mod tests {
                 "13",
                 "56",
                 "11.031",
-                "2026-04",
-                "09",
+                "2026-04-09",
                 "13",
                 "56",
                 "11.031",
                 "trace",
-                "_",
                 "id",
+                "trace_id",
                 "340a6a44b0bd8e37bb7697ss7da61ff0",
                 "span",
-                "_",
                 "id",
+                "span_id",
                 "085ff5ttf1e0a23b",
                 "trace",
-                "_",
                 "flags",
+                "trace_flags",
                 "01",
                 "http",
-                "nio-8081",
-                "exec-16",
+                "nio",
+                "exec",
+                "http-nio-8081-exec-16",
                 "INFO",
-                "c",
-                "h",
-                "p",
                 "xx",
                 "web",
                 "service",
                 "impl",
                 "CCCXForwardKKKServiceImpl",
                 "pushout",
+                "c.h.p.xx.web.service.impl.CCCXForwardKKKServiceImpl.pushout",
                 "188",
                 "登录",
                 "手机",
@@ -311,8 +311,8 @@ mod tests {
                 "key",
                 "829889AC8",
                 "ship",
-                "_",
                 "ship",
+                "ship_ship",
                 "ship",
                 "__",
                 "ship",
@@ -367,8 +367,8 @@ mod tests {
                 "_",
                 "id",
                 "trace",
-                "_",
                 "id",
+                "trace_id",
                 "手机",
                 "手机号",
                 "_",