diff --git a/src/viewer/StaticSimGUIMenu.cpp b/src/viewer/StaticSimGUIMenu.cpp
index 25dd944..7a54757 100644
--- a/src/viewer/StaticSimGUIMenu.cpp
+++ b/src/viewer/StaticSimGUIMenu.cpp
@@ -107,11 +107,16 @@ namespace ssim {
 
             // --------------------------------------------------------------------
             if (ImGui::CollapsingHeader("材料设置", ImGuiTreeNodeFlags_DefaultOpen)) {
+                static const int item_width=200;
+                ImGui::SetNextItemWidth(item_width);
+                ImGui::InputFloat("杨氏模量", &sp_StaticSim_->get_material_property().Youngs_Modulus, 1.0f, 2e11f,
+                                  "%.2e");
 
-                ImGui::InputFloat("杨氏模量", &sp_StaticSim_->get_material_property().Youngs_Modulus, 1.0f, 1e10f,
-                                  "%.3f");
+                ImGui::SetNextItemWidth(item_width);
                 ImGui::InputFloat("泊松比", &sp_StaticSim_->get_material_property().Poisson_ratio, 0.01f, 1.0f,
                                   "%.3f");
+
+                ImGui::SetNextItemWidth(item_width);
                 ImGui::InputFloat("密度", &sp_StaticSim_->get_material_property().density, 1.0f, 1000.0f, "%.3f");
             }