A baby carriage comprises a frame and a cushion. The cushion is disposed on the frame. The cushion comprises a plurality of reinforcing plates and a fabric cover. The reinforcing plates are disposed in the fabric cover. The reinforcing plates are arranged side by side and separated from each other. At least one of the reinforcing plates comprises a plate body and a first reinforcing rib. The plate body has a plurality of through holes formed thereon. The first reinforcing rib is located on a bottom surface of the plate body. The first reinforcing rib comprises a straight section and a curved section. The curved section extends from the straight section. A gap exists between an end of the curved section and one of the straight section and the curved section.