Waterproof structure at joint of roof and concrete roof

The utility model discloses a waterproof structure at the joint of a roof and a concrete roof, and particularly relates to the field of house building, the waterproof structure comprises a waterproof assembly and a drainage assembly, the waterproof assembly comprises a connecting piece used for connecting adjacent roofs and a waterproof layer used for sealing the connecting piece, and the drainage assembly is connected with the waterproof assembly. The drainage assembly comprises a plurality of collecting pipes and a plurality of drainage pipes, one ends of the collecting pipes extend out of the connecting piece, the other ends of the collecting pipes are communicated with the drainage pipes, and the collecting pipes and the drainage pipes are located in the connecting piece. According to the waterproof structure at the joint of the roof and the concrete roof, the parapet wall and the concrete roof are conveniently connected through the connecting piece, the possibility of water seepage at the joint of the pa