diff --git a/B01_Dashboard/B01_Dashboard_Knowledge_Chat.py b/B01_Dashboard/B01_Dashboard_Knowledge_Chat.py
index 7438a4910..26be22a0e 100644
--- a/B01_Dashboard/B01_Dashboard_Knowledge_Chat.py
+++ b/B01_Dashboard/B01_Dashboard_Knowledge_Chat.py
@@ -1,4 +1,4 @@
-"""원문 Markdown 검색과 Gemini 설명. 실무문서는 어떤 경로에서도 읽지 않는다."""
+"""지식DB Markdown 검색과 Gemini 설명. 제외 폴더는 읽지 않는다."""
 
 import os
 import re
@@ -12,7 +12,8 @@ from pydantic import BaseModel, Field
 from common_util.common_util_auth import verify_session
 
 router = APIRouter(prefix="/knowledge-chat", tags=["B01_KnowledgeChat"])
-ORIGINAL = Path(__file__).resolve().parents[1] / "resources" / "knowledge" / "original"
+KNOWLEDGE = Path(__file__).resolve().parents[1] / "resources" / "knowledge"
+EXCLUDED = ("실무문서", "stmate", "다산소프트")
 MODEL = "gemini-3.8-flash"
 
 
@@ -21,24 +22,26 @@ class ChatRequest(BaseModel):
 
 
 def _allowed(path: Path) -> bool:
-    return path.suffix.lower() == ".md" and "실무문서" not in path.relative_to(ORIGINAL).parts
+    return path.suffix.lower() == ".md" and not any(
+        excluded in part.casefold()
+        for part in path.relative_to(KNOWLEDGE).parts
+        for excluded in EXCLUDED
+    )
 
 
 @lru_cache(maxsize=1)
 def _sections() -> list[tuple[str, str]]:
     sections = []
-    for path in ORIGINAL.rglob("*.md"):
+    for path in KNOWLEDGE.rglob("*.md"):
         if not _allowed(path):
             continue
-        relative = path.relative_to(ORIGINAL).as_posix()
-        if path.name in {"CHANGELOG.md", "_index.md"} or path.name.startswith("_"):
-            continue
+        relative = path.relative_to(KNOWLEDGE).as_posix()
         content = path.read_text(encoding="utf-8", errors="replace")
         for part in re.split(r"(?=^#{1,4} )", content, flags=re.MULTILINE):
             part = part.strip()
             for start in range(0, len(part), 1800):
                 snippet = part[start : start + 1800].strip()
-                if len(snippet) >= 40:
+                if snippet:
                     sections.append((relative, snippet))
     return sections
 
diff --git a/resources/tester/test_b01_knowledge_chat.py b/resources/tester/test_b01_knowledge_chat.py
index 3ae7cb687..237e79bb1 100644
--- a/resources/tester/test_b01_knowledge_chat.py
+++ b/resources/tester/test_b01_knowledge_chat.py
@@ -3,14 +3,23 @@ import asyncio
 from B01_Dashboard import B01_Dashboard_Knowledge_Chat as chat
 
 
-def test_chat_excludes_practice_documents_from_gemini(monkeypatch, tmp_path):
-    public = tmp_path / "법률"
-    private = tmp_path / "실무문서"
-    public.mkdir()
+def test_chat_searches_all_knowledge_markdown_except_excluded_folders(monkeypatch, tmp_path):
+    public = tmp_path / "original" / "법률"
+    guide = tmp_path / "technical_info"
+    private = tmp_path / "original" / "실무문서"
+    stmate = tmp_path / "original" / "원가계산" / "STmate"
+    dasan = tmp_path / "original" / "원가계산" / "다산소프트"
+    public.mkdir(parents=True)
+    guide.mkdir()
     private.mkdir()
+    stmate.mkdir(parents=True)
+    dasan.mkdir()
     (public / "현행.md").write_text("# 임도 기준\n" + "임도 설치 기준 내용 " * 10, encoding="utf-8")
+    (guide / "_검토.md").write_text("# 임도 기준\n기술정보 안내 " * 10, encoding="utf-8")
     (private / "사례.md").write_text("# 임도 기준\n비공개 사례 " * 10, encoding="utf-8")
-    monkeypatch.setattr(chat, "ORIGINAL", tmp_path)
+    (stmate / "자료.md").write_text("# 임도 기준\nSTmate 자료 " * 10, encoding="utf-8")
+    (dasan / "자료.md").write_text("# 임도 기준\n다산소프트 자료 " * 10, encoding="utf-8")
+    monkeypatch.setattr(chat, "KNOWLEDGE", tmp_path)
     monkeypatch.setenv("GEMINI_API_KEY", "test-key")
     chat._sections.cache_clear()
     sent = {}
@@ -39,7 +48,10 @@ def test_chat_excludes_practice_documents_from_gemini(monkeypatch, tmp_path):
     monkeypatch.setattr(chat.httpx, "AsyncClient", Client)
     result = asyncio.run(chat.ask_knowledge_chat(chat.ChatRequest(question="임도 기준"), {}))
     assert result["answer"] == "설명 [1]"
-    assert result["sources"][0]["path"] == "법률/현행.md"
+    paths = {source["path"] for source in result["sources"]}
+    assert paths == {"original/법률/현행.md", "technical_info/_검토.md"}
     assert "실무문서" not in sent["prompt"]
     assert "비공개 사례" not in sent["prompt"]
+    assert "STmate" not in sent["prompt"]
+    assert "다산소프트" not in sent["prompt"]
     chat._sections.cache_clear()