The invention discloses a multi-disc brake, and relates to a vehicle brake. The multi-disc brake is provided with a left brake, a right brake and a piston bracket, wherein the left brake is provided with a planet wheel carrier, left movable friction sheets, left static friction sheets, a left piston, an internal tooth ring and a left return spring; external teeth of the left static friction sheets are connected with the internal teeth of the internal tooth ring; internal teeth of the left movable friction sheets are connected with external teeth of the planet wheel carrier; external teeth of the piston bracket are connected with the internal teeth of the internal tooth ring; the left piston is arranged at the left edge of the piston bracket; and the left return spring is respectively connected with the piston bracket and the left piston. The right brake is provided with a right piston, right static friction sheets, right movable friction sheets, an internal tooth ring, an internal tooth ring bracket and a right return spring; external teeth of the right static friction sheets are connected with internal teeth of the piston bracket; internal teeth of the right movable friction sheets are connected with external teeth of the fixed bracket; the total number of the right static friction sheets is one more than that of the right movable friction sheets; the right piston is arrangedat the right edge of the piston bracket; the right return spring is respectively connected with the piston bracket and the right piston; and the internal tooth ring bracket is relatively static to a bridge shell.