diff --git a/test/unit/specs/input-number.spec.js b/test/unit/specs/input-number.spec.js
new file mode 100644
index 000000000..d26b3a731
--- /dev/null
+++ b/test/unit/specs/input-number.spec.js
@@ -0,0 +1,223 @@
+import { createVue, triggerEvent } from '../util';
+
+describe('InputNumber', () => {
+  it('create', () => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 1
+        };
+      }
+    }, true);
+    let input = vm.$el.querySelector('input');
+
+    expect(vm.value).to.be.equal(1);
+    expect(input.value).to.be.equal('1');
+  });
+  it('decrease', done => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 5
+        };
+      }
+    }, true);
+
+    let input = vm.$el.querySelector('input');
+    let btnDecrease = vm.$el.querySelector('.el-input-number__decrease');
+    for (let i = 0; i < 3; i++) {
+      triggerEvent(btnDecrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+    }
+    triggerEvent(btnDecrease, 'mouseenter');
+    setTimeout(_ => {
+      expect(vm.$el.querySelector('.el-input.is-active')).to.exist;
+      expect(vm.value).to.be.equal(2);
+      expect(input.value).to.be.equal('2');
+
+      triggerEvent(btnDecrease, 'mouseleave');
+
+      vm.$nextTick(_ => {
+        expect(vm.$el.querySelector('.el-input.is-active')).to.not.exist;
+        done();
+      });
+    }, 100);
+  });
+  it('increase', done => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 1.5
+        };
+      }
+    }, true);
+
+    let input = vm.$el.querySelector('input');
+    let btnIncrease = vm.$el.querySelector('.el-input-number__increase');
+    for (let i = 0; i < 3; i++) {
+      triggerEvent(btnIncrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+    }
+    setTimeout(_ => {
+      expect(vm.value).to.be.equal(4.5);
+      expect(input.value).to.be.equal('4.5');
+      done();
+    }, 100);
+  });
+  it('disabled', done => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value" disabled>
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 2
+        };
+      }
+    }, true);
+
+    let input = vm.$el.querySelector('input');
+    let btnDecrease = vm.$el.querySelector('.el-input-number__decrease');
+    let btnIncrease = vm.$el.querySelector('.el-input-number__increase');
+
+    triggerEvent(btnDecrease, 'mousedown');
+    triggerEvent(document, 'mouseup');
+
+    for (let i = 0; i < 3; i++) {
+      triggerEvent(btnIncrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+    }
+
+    setTimeout(_ => {
+      expect(vm.value).to.be.equal(2);
+      expect(input.value).to.be.equal('2');
+      done();
+    }, 100);
+  });
+  it('step', done => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value" :step="3.2">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 5
+        };
+      }
+    }, true);
+
+    let input = vm.$el.querySelector('input');
+    let btnIncrease = vm.$el.querySelector('.el-input-number__increase');
+    let btnDecrease = vm.$el.querySelector('.el-input-number__decrease');
+
+    for (let i = 0; i < 2; i++) {
+      triggerEvent(btnIncrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+    }
+    setTimeout(_ => {
+      expect(vm.value).to.be.equal(11.4);
+      expect(input.value).to.be.equal('11.4');
+
+      triggerEvent(btnDecrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+
+      setTimeout(_ => {
+        expect(vm.value).to.be.equal(8.2);
+        expect(input.value).to.be.equal('8.2');
+        done();
+      }, 100);
+    }, 100);
+  });
+  it('min', done => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value" :min="6">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 9
+        };
+      }
+    }, true);
+    const vm2 = createVue({
+      template: `
+        <el-input-number v-model="value" :min="6">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 3
+        };
+      }
+    }, true);
+
+    expect(vm2.value === 6);
+    expect(vm2.$el.querySelector('input').value).to.be.equal('6');
+
+    let input = vm.$el.querySelector('input');
+    let btnDecrease = vm.$el.querySelector('.el-input-number__decrease');
+    for (let i = 0; i < 5; i++) {
+      triggerEvent(btnDecrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+    }
+    setTimeout(_ => {
+      expect(vm.value).to.be.equal(6);
+      expect(input.value).to.be.equal('6');
+      done();
+    }, 100);
+  });
+  it('max', done => {
+    const vm = createVue({
+      template: `
+        <el-input-number v-model="value" :max="8">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 5
+        };
+      }
+    }, true);
+    const vm2 = createVue({
+      template: `
+        <el-input-number v-model="value" :max="8">
+        </el-input-number>
+      `,
+      data() {
+        return {
+          value: 100
+        };
+      }
+    }, true);
+
+    expect(vm2.value === 8);
+    expect(vm2.$el.querySelector('input').value).to.be.equal('8');
+
+    let input = vm.$el.querySelector('input');
+    let btnIncrease = vm.$el.querySelector('.el-input-number__increase');
+    for (let i = 0; i < 5; i++) {
+      triggerEvent(btnIncrease, 'mousedown');
+      triggerEvent(document, 'mouseup');
+    }
+    setTimeout(_ => {
+      expect(vm.value).to.be.equal(8);
+      expect(input.value).to.be.equal('8');
+      done();
+    }, 100);
+  });
+});
diff --git a/test/unit/specs/input.spec.js b/test/unit/specs/input.spec.js
index ec255591b..0e315d016 100644
--- a/test/unit/specs/input.spec.js
+++ b/test/unit/specs/input.spec.js
@@ -5,8 +5,8 @@ describe('Input', () => {
     const vm = createVue({
       template: `
         <el-input
-          minlength="3"
-          maxlength="5"
+          :minlength="3"
+          :maxlength="5"
           placeholder="请输入内容"
           @focus="handleFocus"
           value="input">