A gripping method is for gripping an object using a gripping mechanism including a roller and a frame that houses the roller. The gripping method includes a first stage and a second stage. In the first stage, the gripping mechanism moves relative to the object such that a first portion of the object is gripped between an outer surface of the roller and an inner surface of the frame. In the second stage, the gripping mechanism further moves relative to the object such that the roller is lifted by a second portion of the object before gripping of the object is released.