Safety net for building construction

The invention relates to a safety net for building construction, which comprises a net body, and mounting plates are fixed at two ends of the net body; the two vertical plates are oppositely arranged, each vertical plate is internally provided with a cavity, the opposite inner sides of the two vertical plates are provided with first openings, and the first openings are communicated with the cavities; the two winding rollers are used for winding from the two ends of the net body, the two winding rollers are located in the cavity and rotationally installed on the inner wall of the vertical plate in a one-to-one correspondence mode, one side of each winding roller extends out of the first opening, and a strip-shaped opening allowing the net body to penetrate through is formed in each winding roller; the mounting plate is located in the winding roller and blocks the strip-shaped opening, and the first end of the winding roller is provided with an end opening allowing the mounting plate to penetrate out. The techn