Prefabricated part at wall head of cement enclosing wall

The utility model is suitable for the technical field of cement wall prefabricated parts. The utility model provides a cement enclosure wall head prefabricated part. The wallboard reinforcing structure comprises two wallboard assemblies and a reinforcing assembly. Each wallboard assembly comprises a cement board, a rib mechanism and a raised line; the cement board is arranged in the vertical direction. The rib mechanism is embedded in the cement board; wherein two slot groups which are respectively positioned on two side edges of the cement board are formed in the cement board; each slot groupcomprises two slots; the reinforcing assembly comprises a reinforcing part and a reinforcing part, fixing plate and inserting rod, the fixing plate is fixedly connected with the two cement plates ofthe two wallboard assemblies. Two inserting rod sets are fixed to the side, facing the cement boards, of the fixing board, the two inserting rod sets correspond to the two cement boards respectively,each inserting rod set corr