The product has the function of wheelchair, walking aid and transfer, allowing the user to use the way of the back of the chair to open the side, and quickly transfer the body to the bed or chair. The design of the left and right can be opened and closed to make the operation more convenient. The back of the chair can be used as a grip for rehabilitation walkers, and the appearance of the two-piece skeleton using the internal main skeleton, external shape, so that the product is more beautiful.