BACK REINFORCEMENT STRUCTURE OF SAFETY SEAT AND SAFETY SEAT

The present application discloses a back reinforcement structure of a safety seat. The back reinforcement structure of a safety seat includes: a back, a rotary plate, a reinforcement member and a connector, where the back is provided with a first connection portion, the rotary plate is connected to the first connection portion through the connector, the reinforcement member is arranged in the back, and the reinforcement member is connected to the first connection portion. The present application further discloses a safety seat using the reinforcement structure above. According to the present application, the reinforcement member is arranged in the back, and the reinforcement member, the back and the rotary plate form an integrated stress structure, such that the strength of the back can be increased, an integral connection structure is simple, and production and assembly costs are low.