An electronic device and a camera switching method thereon are provided. The electronic device includes a first camera module, a second camera module, a touch screen and a processor. The touch screen is configured to detect a touch event, wherein the touch event is triggered as the touch screen is touched and dragged from a first position to a second position. The processor is configured to switch between the first camera module and the second camera module in response to the touch event. The camera switching method is applied to the electronic device to implement the operations.