1. An image acquisition method, comprising: receiving an image function enabling instruction and controlling, according to the image function enabling instruction, a touch display apparatus to enter an image acquisition interface; receiving a touch action on the image acquisition interface; determining whether image acquisition duration of the touch action on one same area of the image acquisition interface is greater than or equal to a preset image acquisition preparation time; and controlling an image sensing apparatus to acquire a corresponding image if the image acquisition duration of the touch action on the same area of the image acquisition interface is greater than or equal to the image acquisition preparation time.