Color steel magnesium oxide rock wool composite board with protective structure

The utility model discloses a color steel magnesium oxide rock wool composite board with a protective structure, which comprises a rock wool composite board main body, triangular protective shells are respectively arranged at four corners of the rock wool composite board main body, mounting grooves are respectively formed in the upper and lower inner walls of the triangular protective shells, prizing rods are rotatably arranged in the mounting grooves, and the prizing rods are connected with the triangular protective shells. A prizing rod is arranged in the mounting groove, a positioning block is fixed to one side of the prizing rod, a positioning groove is formed in the surface of the rock wool composite board body, the positioning block is located in the positioning groove, a spring is fixed between the prizing rod and the inner wall of the mounting groove, and a pressing piece is arranged on the side, away from the positioning block, of the prizing rod. According to the rock wool composite board, it is gua