The utility model provides a novel drum brake, it includes the chassis, and the bottom on its chassis is equipped with solid fixed ring, is equipped with the fixed pipe of two centrosymmetric in the bottom of brake shoe, is equipped with the screw in solid fixed ring's bottom, is equipped with the bolt in the screw, and the round pin axle passes solid fixed ring and two fixed pipes, has the hole that matches with the bolt epaxial division of round pin. The utility model discloses rational in infrastructure, the design is unique, excellent in use effect.