diff --git a/primitive_process/src/subface/geometry/polyline_fillet.cpp b/primitive_process/src/subface/geometry/polyline_fillet.cpp
index 79d4fa7..a9c2c6b 100644
--- a/primitive_process/src/subface/geometry/polyline_fillet.cpp
+++ b/primitive_process/src/subface/geometry/polyline_fillet.cpp
@@ -115,6 +115,9 @@ Corner compute_corner(const std::vector<Eigen::Vector2d>& pts,
     const double max_turn = cfg.max_fillet_turn_angle_deg * (pi / 180.0);
     if (turn_angle > max_turn) return c;
 
+    // 钝角不插入圆弧
+    if (turn_angle > pi_div_2) return c;
+
     double trim = 0.0;
     if (cfg.auto_mode) {
         // 依据局部转角和相邻弧段长度计算最小圆弧，