A folding chair enables a user to easily change directions in a sitting state. The user's posture can be supported to prevent sagging in response to the weight of the sitting user. The folding chair includes a lower block having a first stopper connected with an end of each of the legs of the chair. The first stopper parts limit the other ends of the legs from rotating in the lower central direction. An upper block has a second stopper that horizontally rotates based on an axial connection to the lower block and is connected to an end of each of a plurality of support parts. The second stoppers limit the other ends of the support parts from rotating in the lower central direction. A seat connects the other ends of the support parts. The legs and the support parts can be folded or unfolded in the same directions.