Building construction rainfall drainage structure

The utility model discloses a rainfall drainage structure for building construction, and belongs to the technical field of building construction. According to the technical key points, a frame is included, a groove is formed in the upper surface of the frame, a drainage groove is formed in the middle of the groove bottom of the groove, a filter screen plate is arranged at the groove bottom of the groove, a sealing strip is bonded to the edge of the lower surface of the filter screen plate, and the sealing strip is connected with the edge of the groove bottom of the groove in an attached mode. The filter screen plate is arranged in the groove, impurities in rainwater can be filtered out through the filter screen plate, so that the rainwater cannot block the drainage pipeline, the conical plates are arranged on the upper surface of the filter screen plate, and the conical plates are arranged to prevent the filter screen plate from being blocked by foreign matter with large area. And meanwhile, the grating plate