The invention discloses a motorcycle direction lamp structure. The direction lamp comprises a lamp base and a lamp housing, wherein the lamp base at least has a direction bulb mounting part and a position lamp mounting part; the direction bulb mounting part can be used for mounting a bulb with a flashing light source; the position lamp mounting part extends on the lamp base in the long axial direction of the lamp base; one side of the position lamp mounting part is near the direction bulb mounting part; the position lamp mounting part can be used for mounting a position lamp; the position lamp is arranged on a waterproof cover; the waterproof cover is arranged at the external of the position lamp mounting part; the lamp housing is a transparent housing body, and is arranged at the front end of the lamp base; the waterproof cover can totally cover the external of the position lamp mounting part of the lamp base, so that the direction lamp has the waterproof performance; and meanwhile, the position lamp arranged on the waterproof cover can be disassembled to replace and assemble a decorative part with lower cost, so that the direction lamp has a simple setting change effect of assembling or not assembling the position lamp, and the use effect of the direction lamp can be improved.