Dynamic screen lock unlocking method and electronic device applying same

The invention discloses a dynamic screen lock unlocking method, which is applied to an electronic device with a touch screen. A protective interface is displayed by the electronic device through the touch screen under a screen lock state, and the electronic device is used for covering and locking an original use interface. The method comprises the following steps: randomly generating an animation at a free position of the protective interface, wherein the animation comprises a first range block and a second range block, and the first range block is positioned in the second range block; receiving point touch operation and judging whether the touch position is positioned in the first range block or not, if so, receiving sliding touch operation taking the touch position as a moving start point, and moving the first range block according to the sliding touch operation; and judging whether the first range block moves out of the second range block or not, if so, removing the protective interface, so as to unlock th