diff --git a/packages/dbgpt-core/src/dbgpt/util/string_utils.py b/packages/dbgpt-core/src/dbgpt/util/string_utils.py
index 41e60b97c7..0593378a5c 100644
--- a/packages/dbgpt-core/src/dbgpt/util/string_utils.py
+++ b/packages/dbgpt-core/src/dbgpt/util/string_utils.py
@@ -94,12 +94,10 @@ def extract_content_open_ending(long_string, s1, s2, is_include: bool = False):
 def str_to_bool(s):
     if s.lower() in ("true", "t", "1", "yes", "y"):
         return True
-    elif s.lower().startswith("true"):
-        return True
     elif s.lower() in ("false", "f", "0", "no", "n"):
         return False
     else:
-        return False
+        raise ValueError(f"Could not convert string to bool: '{s}'")
 
 
 def _to_str(x, charset="utf8", errors="strict"):
diff --git a/tests/unit_tests/test_string_utils.py b/tests/unit_tests/test_string_utils.py
new file mode 100644
index 0000000000..354b09b8b4
--- /dev/null
+++ b/tests/unit_tests/test_string_utils.py
@@ -0,0 +1,31 @@
+import pytest
+from dbgpt.util.string_utils import str_to_bool
+
+
+def test_str_to_bool_positive():
+    assert str_to_bool("true") is True
+    assert str_to_bool("t") is True
+    assert str_to_bool("1") is True
+    assert str_to_bool("yes") is True
+    assert str_to_bool("y") is True
+
+
+def test_str_to_bool_negative():
+    assert str_to_bool("false") is False
+    assert str_to_bool("f") is False
+    assert str_to_bool("0") is False
+    assert str_to_bool("no") is False
+    assert str_to_bool("n") is False
+
+
+def test_str_to_bool_edge_cases():
+    with pytest.raises(ValueError):
+        str_to_bool("true_dat")
+    with pytest.raises(ValueError):
+        str_to_bool("false_dat")
+    with pytest.raises(ValueError):
+        str_to_bool("t_rue")
+    with pytest.raises(ValueError):
+        str_to_bool("f_alse")
+    with pytest.raises(ValueError):
+        str_to_bool("")