diff --git a/app/Models/OrderItems.php b/app/Models/OrderItems.php
index 5496db7..fcb8f64 100755
--- a/app/Models/OrderItems.php
+++ b/app/Models/OrderItems.php
@@ -179,6 +179,11 @@ class OrderItems extends SoftDeletesModel
         $this->factor_texts = $factor_texts;
 
         if (!$this->product) {
+            // 没有 product 时设置默认值
+            if (!isset($this->paramedic_total) || $this->paramedic_total === null) {
+                $this->paramedic_total = $this->total ?? 0;
+                $this->fee = $this->fee ?? 0;
+            }
             return $this;
         }
 
@@ -200,11 +205,21 @@ class OrderItems extends SoftDeletesModel
                 }
 
                 if (!$factor) {
+                    // 找不到因子时设置默认值
+                    if (!isset($this->paramedic_total) || $this->paramedic_total === null) {
+                        $this->paramedic_total = $this->total ?? 0;
+                        $this->fee = $this->fee ?? 0;
+                    }
                     return $this;
                 }
 
                 //todo:考虑不同项目的情况，目前是全部统一
                 if (!$this->order) {
+                    // 没有 order 时设置默认值
+                    if (!isset($this->paramedic_total) || $this->paramedic_total === null) {
+                        $this->paramedic_total = $this->total ?? 0;
+                        $this->fee = $this->fee ?? 0;
+                    }
                     return $this;
                 }
 
@@ -224,6 +239,14 @@ class OrderItems extends SoftDeletesModel
                 $this->fee = $fee;
                 break;
         }
+        
+        // 兜底逻辑：如果 paramedic_total 没有被设置，使用默认值
+        // 这通常发生在没有 product、fee_type 不是 "factor"、找不到因子或没有 order 的情况下
+        if (!isset($this->paramedic_total) || $this->paramedic_total === null) {
+            $this->paramedic_total = $this->total ?? 0;
+            $this->fee = $this->fee ?? 0;
+        }
+        
         return $this;
     }