The invention discloses a motorcycle lamp shell. The motorcycle lamp shell comprises a shell body, four fixing pillars with threaded holes, and at least six clamps, wherein two fixing pillars are arranged at the upper end of the shell body; other two fixing pillars are arranged at the lower end of the shell body; the at least six clamps are symmetrically fixed on the shell body and are close to the edge of the inner side of the shell body; the at least six clamps are located between the fixing pillars at the upper end and the fixing pillars at the lower end; the at least six clamps are arranged to form a shape of V; first reinforcing ribs are arranged on the two fixing pillars at the upper end; two second reinforcing ribs are arranged on the two fixing pillars at the lower end. The motorcycle lamp shell can stably fix the lamp.