Road construction drainage structure

The utility model discloses a drainage structure for road construction, and relates to the field of road construction. The road construction drainage structure comprises a positioning insertion rod, a fixing back plate is arranged on the positioning insertion rod, a lifting platform is connected to the fixing back plate in a sliding mode, a drainage pump body is arranged on the lifting platform, a lifting mechanism corresponding to the lifting platform is arranged on the fixing back plate, and an output pipe and a suction pipe are arranged on the drainage pump body. According to the road construction drainage structure, a water source in a road construction foundation pit can be filtered through the water inlet tank, sludge suction is avoided, the height of the suction pipe and the height of the water inlet tank are adjusted in cooperation with the lifting mechanism, the safety distance between the water inlet tank and the bottom of the foundation pit is kept, and sludge is prevented from blocking the water i