diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc54d972a9..aba6e6e426 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## v6.3.4
+## v6.3.5
 
 ### 拉电线不知天地为何物 | Highlight
 
@@ -65,6 +65,16 @@ We warmly welcome community developers to assist with adaptation and submit impr
 
 以下是详细内容：
 
+## v6.3.5
+
+### 修复 | Fix
+
+* 击杀数部分识别错误情况下闪退 @ABA2396
+
+### 其他 | Other
+
+* 调整 BattleKills roi @ABA2396
+
 ## v6.3.4
 
 ### 修复 | Fix
diff --git a/resource/tasks/tasks.json b/resource/tasks/tasks.json
index c3b6356196..bd14013ab6 100644
--- a/resource/tasks/tasks.json
+++ b/resource/tasks/tasks.json
@@ -3771,7 +3771,7 @@
         "algorithm": "OcrDetect",
         "isAscii": true,
         "text": [],
-        "roi": [50, 0, 100, 40],
+        "roi": [50, -20, 100, 40],
         "useRaw": false,
         "specialParams_doc": "Kill区域变化阈值, 模板匹配, 100=1.0; 正常在 0.997-1 之间波动, 少有0.995; _5->_6 的分数最高, 可达0.94",
         "specialParams": [98]
diff --git a/src/MaaCore/Vision/Battle/BattlefieldMatcher.cpp b/src/MaaCore/Vision/Battle/BattlefieldMatcher.cpp
index 394388aef5..f6347abebf 100644
--- a/src/MaaCore/Vision/Battle/BattlefieldMatcher.cpp
+++ b/src/MaaCore/Vision/Battle/BattlefieldMatcher.cpp
@@ -309,6 +309,16 @@ BattlefieldMatcher::MatchResult<std::pair<int, int>> BattlefieldMatcher::kills_a
         }
     }
 
+    if (kills_text.length() <= pos + 1) {
+        Log.error(
+            "kills_text length is too short: text='{}', length={}, pos={}",
+            kills_text,
+            kills_text.size(),
+            pos
+        );
+        return {};
+    }
+
     // 例子中的"0"
     std::string kills_count = kills_text.substr(0, pos);
     if (kills_count.empty() || !std::ranges::all_of(kills_count, [](char c) -> bool { return std::isdigit(c); })) {