diff --git a/src/components/calc/index.vue b/src/components/calc/index.vue
index 6e37d8d..f4e1a43 100644
--- a/src/components/calc/index.vue
+++ b/src/components/calc/index.vue
@@ -21,7 +21,7 @@
             <div class="input-item" v-for="(it,key) in settingList.filter(s=>s.type=='gut')" :key="key">
               <div class="title">{{ it.title }}</div>
               <div class="input">
-                <input type="number" v-model="it.value" :placeholder="it.placeholder"/>
+                <input type="number" v-model="it.value" min="0" :placeholder="it.placeholder"/>
                 <span v-if="it.unit" class="unit">{{ it.unit }}</span>
               </div>
             </div>
@@ -32,7 +32,7 @@
             <div class="input-item" v-for="(it,key) in settingList.filter(s=>s.type=='vein')" :key="key">
               <div class="title">{{ it.title }}</div>
               <div class="input">
-                <input type="number" v-model="it.value" :placeholder="it.placeholder"/>
+                <input type="number" v-model="it.value" min="0" :placeholder="it.placeholder"/>
                 <span v-if="it.unit" class="unit">{{ it.unit }}</span>
               </div>
             </div>
diff --git a/src/pages/result/components/input-setting.vue b/src/pages/result/components/input-setting.vue
index 1a12e58..a53417d 100644
--- a/src/pages/result/components/input-setting.vue
+++ b/src/pages/result/components/input-setting.vue
@@ -22,7 +22,7 @@
             <div class="input-item" v-for="(it,key) in settingList.filter(s=>s.type=='gut')" :key="key">
               <div class="title">{{ it.title }}</div>
               <div class="input">
-                <input type="number" v-model="it.value" :placeholder="it.placeholder"/>
+                <input type="number" v-model="it.value" min="0" :placeholder="it.placeholder"/>
                 <span v-if="it.unit" class="unit">{{ it.unit }}</span>
               </div>
             </div>
@@ -33,7 +33,7 @@
             <div class="input-item" v-for="(it,key) in settingList.filter(s=>s.type=='vein')" :key="key">
               <div class="title">{{ it.title }}</div>
               <div class="input">
-                <input type="number" v-model="it.value" :placeholder="it.placeholder"/>
+                <input type="number" v-model="it.value" min="0" :placeholder="it.placeholder"/>
                 <span v-if="it.unit" class="unit">{{ it.unit }}</span>
               </div>
             </div>