The invention provides dual-purpose slippers suitable for indoor and outdoor wearing. Each dual-purpose slipper comprises a slipper sole and a slipper vamp arranged on the slipper sole, and further comprises a slipper heel detachably arranged at the lower side of the slipper sole, wherein a connecting post is detachably arranged at the lower end of a support layer of the slipper sole, the slipperheel comprises a left heel body, a right heel body and a protection bottom cover, the left heel body and the right heel body are buckled to the left and right sides of the connecting post and assembled to form an integrated structure, the protection bottom cover is buckled to the lower ends of the left heel body and the right heel body, the lower end of the left heel body is provided with a left bottom cavity, the lower end of the right heel body is provided with a right bottom cavity, and a locking mechanism capable of locking the left heel body and the right heel body is arranged in the leftbottom cavity and the right bottom cavity. With the dual-purpose slippers suitable for indoor and outdoor wearing provided by the invention, the problems that the existing slippers are single in structure, and can not be detached randomly, and the style can not be randomly changed, are solved.