The utility model relates to a drum type brake shoe, in particular to a drum type brake shoe assembly based on carbon-based non-asbestos organic friction material, and mainly solves the technical problems that existing brake shoe assemblies in the prior art utilizing asbestos-type or semi-metal friction sheets are poor in environmental protection performance, high in proportion and easy to rust, friction couplers are easy to damage, and the like. The drum type brake shoe assembly comprises a trailing shoe (1) and a leading shoe (2), and is characterized in that the trailing shoe (1) and the leading shoe (2) are semicircular symmetrically, one side of the trailing shoe (1) is connected with a parking draw arm (3), one side of the leading shoe (2) is connected with a regulating toothed plate bearing (4), and carbon-based non-asbestos organic friction sheets (5) are fixed at outer edges of the trailing shoe (1) and the leading shoe (2).