diff --git a/examples/renderTest.php b/examples/renderTest.php
index f79547c..e5eced7 100644
--- a/examples/renderTest.php
+++ b/examples/renderTest.php
@@ -38,6 +38,7 @@ const CLOSE = false | 0;
  * 标准材质长宽
  */
 const MAT_STANDARD_SIZE = 1000;
+const UNIT_CONVERSION_MM_TO_M = 0.001;
 
 
 
@@ -246,12 +247,21 @@ foreach($taskModel->childsParams as $childParams){
 
 
 // 三、创建相机
+$position = $taskCamera->position;
+$position->x = $position->x * UNIT_CONVERSION_MM_TO_M;
+$position->y = $position->y * UNIT_CONVERSION_MM_TO_M;
+$position->z = $position->z * UNIT_CONVERSION_MM_TO_M;
+$target = $taskCamera->target;
+$target->x = $target->x * UNIT_CONVERSION_MM_TO_M;
+$target->y = $target->y * UNIT_CONVERSION_MM_TO_M;
+$target->z = $target->z * UNIT_CONVERSION_MM_TO_M;
+$rotation = $taskCamera->rotation;
 $camera = new camera\Perspective(                         
     [
         'autovolumeEnable' => 0,
-        'lookatOrig' => "{$taskCamera->position->x} {$taskCamera->position->y} {$taskCamera->position->z}",
-        'lookatTarget' => "{$taskCamera->target->x} {$taskCamera->target->y} {$taskCamera->target->z}",
-        'up' => "{$taskCamera->rotation->x} {$taskCamera->rotation->y} {$taskCamera->rotation->z}",
+        'lookatOrig' => "{$position->x} {$position->y} {$position->z}",
+        'lookatTarget' => "{$target->x} {$target->y} {$target->z}",
+        'up' => "{$rotation->x} {$rotation->y} {$rotation->z}",
         'screenwindow' => "-1 1 -1 1",
         'autofocusEnable' => 0,
         'fieldofview' => $taskCamera->fov,