The present disclosure provides an accessory device for portable terminal, comprising: a body including a plurality of legs; an elastic tube positioned to surround the body; a first plate coupled to a central portion of the body; and a second plate coupled to end portions of the legs distal from the central portion. The body of the accessory device for portable terminal is configured to be positioned in a contraction position or a stand-up position by deforming the elastic tube in a transverse axis direction according to a force applied in a longitudinal axis direction of the body in a state in which the elastic tube is placed.