diff --git a/api/app/services/elevation_file_record_service.py b/api/app/services/elevation_file_record_service.py
index 7c79aba..9924412 100644
--- a/api/app/services/elevation_file_record_service.py
+++ b/api/app/services/elevation_file_record_service.py
@@ -32,7 +32,6 @@ from .elevation_service import (
     RASTER_FILE_FORMATS,
     TERRAIN_SUPPORTED_DATASET_FORMATS,
     _analyze_dataset_content,
-    _build_dataset_or_400,
     _build_raster_preview,
     _decode_csv_bytes,
     _default_terrain_status_for_format,
diff --git a/api/tests/test_elevation_file_record_service_imports.py b/api/tests/test_elevation_file_record_service_imports.py
new file mode 100644
index 0000000..c412f84
--- /dev/null
+++ b/api/tests/test_elevation_file_record_service_imports.py
@@ -0,0 +1,56 @@
+from __future__ import annotations
+
+import ast
+import unittest
+from pathlib import Path
+
+
+class ElevationFileRecordServiceImportTests(unittest.TestCase):
+    def test_elevation_service_imports_reference_defined_symbols(self) -> None:
+        service_path = Path("api/app/services/elevation_file_record_service.py")
+        elevation_service_path = Path("api/app/services/elevation_service.py")
+
+        service_tree = ast.parse(service_path.read_text(encoding="utf-8"))
+        elevation_service_tree = ast.parse(elevation_service_path.read_text(encoding="utf-8"))
+
+        imported_names = {
+            alias.name
+            for node in service_tree.body
+            if isinstance(node, ast.ImportFrom) and node.module == "elevation_service"
+            for alias in node.names
+        }
+        defined_names = {
+            node.name
+            for node in elevation_service_tree.body
+            if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef))
+        }
+        defined_names.update(
+            target.id
+            for node in elevation_service_tree.body
+            if isinstance(node, ast.Assign)
+            for target in node.targets
+            if isinstance(target, ast.Name)
+        )
+        defined_names.update(
+            node.target.id
+            for node in elevation_service_tree.body
+            if isinstance(node, ast.AnnAssign) and isinstance(node.target, ast.Name)
+        )
+        defined_names.update(
+            alias.asname or alias.name.split(".")[0]
+            for node in elevation_service_tree.body
+            if isinstance(node, ast.Import)
+            for alias in node.names
+        )
+        defined_names.update(
+            alias.asname or alias.name
+            for node in elevation_service_tree.body
+            if isinstance(node, ast.ImportFrom)
+            for alias in node.names
+        )
+
+        self.assertLessEqual(imported_names, defined_names)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/memory/2026-06-20.md b/memory/2026-06-20.md
index c6342fa..2168495 100644
--- a/memory/2026-06-20.md
+++ b/memory/2026-06-20.md
@@ -208,6 +208,24 @@
 - 风险与关注点：
   - 改动仅移除 Worker 监控移动卡片容器的额外顶部间距，不影响接口、权限、表格、抽屉或数据筛选逻辑。
 
+# Work Log - 高程文件记录服务导入修复（FL-213）
+
+- 背景：
+  - API 容器启动时报 `elevation_file_record_service` 无法从 `elevation_service` 导入 `_build_dataset_or_400`，导致容器反复重启。
+
+- 本次处理：
+  - 移除 `api/app/services/elevation_file_record_service.py` 中未使用且不存在的 `_build_dataset_or_400` 导入。
+  - 新增 `api/tests/test_elevation_file_record_service_imports.py`，用 AST 检查 `elevation_file_record_service` 从 `elevation_service` 导入的符号均在目标模块作用域存在，防止同类启动期 ImportError 回归。
+
+- 验证：
+  - 基线：`PYTHONPATH=api python3 -c 'from app.services import elevation_file_record_service'` 因本地未安装 `sqlalchemy` 提前失败；随后使用 `uv` 准备完整 API 依赖时耗时过长，未作为有效基线。
+  - 修改后：`python3 -m unittest api.tests.test_elevation_file_record_service_imports` 通过。
+  - 修改后：`python3 -m py_compile api/app/services/elevation_file_record_service.py api/app/services/elevation_service.py api/tests/test_elevation_file_record_service_imports.py` 通过。
+  - 修改后：`git diff --check` 通过。
+
+- 风险与关注点：
+  - 改动仅删除未使用导入并补充静态回归测试，不改变高程文件记录接口、任务派发、分析或地形瓦片生成逻辑。
+
 # Work Log - 任务监控页面一致性优化（FL-156）
 
 - 背景：