Reversible drip irrigation type protective fence for greening maintenance

The drip irrigation type protective fence comprises stand columns and a fence plate with the two ends connected with the stand columns, a water conveying pipe connected with the fence plate is arranged at the upper end of a water tank, and limiting discs are arranged on the inner walls of the stand columns and used for limiting the rotation angle of the fence plate. A first limiting block and a second limiting block which are connected with the breast board are arranged on the outer surface of the limiting disc, the mounting position can be adjusted on the surface of the limiting disc according to use requirements, a hard water outlet pipe is arranged on the outer surface of the vertical plate, a rotating handle is arranged at one end of the breast board, and the breast board is connected with a water spraying pipe and a bearing disc through the hard water outlet pipe; water in a water tank is conveyed to a hard water outlet pipe through the interior of a vertical plate and flows out of a water spraying pipe