Abstract: A motorcycle windshield structure includes a windshield support frame set that supports a windshield and includes a vehicle body mounting frame seat unit, a sliding frame unit on the vehicle body mounting frame seat unit, and a power unit driving the sliding frame unit to slide. The vehicle body mounting frame seat unit includes a slide rail mounting frame having first and second guide roller sets. The sliding frame unit includes slide rails connected to the slide rail mounting frame and a sliding frame slidable along the slide rails. The power unit includes a power motor and first and second control cables respectively wound around the first and second guide roller sets. The power motor and the first and second control cables define, respectively, a raising stroke and a lowering stroke for the windshield, which are arranged, in a parallel manner, in a vehicle left-right direction.