Folding chair

The utility model discloses a folding chair, which comprises the connecting pieces such as a chair seat, front legs, rare legs and rivets, etc. The two sides of the middle part of the chair seat is connected with a first pivot which is riveted with the front legs, and the two sides of the middle rear part of the chair seat is connected with a second pivot which is riveted with the rare legs by a movable strip body. The end of the chair seat is arranged with a limited barrier block, an arc notch which is matched with the limited barrier block is arranged at the movable strip body near the rare legs end, and meanwhile, the folding chair also comprises a lock catch body which is matched with the limited barrier block. Owing to adding a lock catch body structure, when users expands the folding chair, the limited barrier block on the chair seat can sink into the arc notch on the movable strip body, then the lock catch body rotates an angle in order to make the lock catch body locking match with the limited barrier block again. Therefore, the chair seat of the folding chair is stable, and the folding chair can be folded only separating the lock catch body and the limited barrier block.