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 action acquisition duration of the touch action on one same area of the image acquisition interface is greater than or equal to a preset action acquisition preparation time; if the action acquisition duration of the touch action on the same area of the image acquisition interface is greater than or equal to the action acquisition preparation time, determining whether image acquisition duration of the touch action on the same area of the image acquisition interface is greater than or equal to a preset image acquisition preparation time; 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; and performing the receiving the touch action on the image acquisition interface of the touch display apparatus again if the image acquisition duration of the touch action on the same area of the image acquisition interface is less than the image acquisition preparation time.