Safety fence for livestock breeding

The safety fence for livestock breeding comprises a fence body, a fixing box is fixedly connected to the center of the bottom of the front face of the fence body, a hollow barrel is fixedly connectedto the bottom of the back face of the inner wall of the fixing box, a push rod is arranged at the position, corresponding to the hollow barrel, of the front face of the inner wall of the fixing box, and the back side of the push rod penetrates into the hollow barrel. The sliding plate is matched with the sliding groove to move downwards, meanwhile, the limiting rod is separated from the interior of the fixing groove to remove fixation, finally the fence is opened, otherwise, the spring pushes the push rod to reset forwards to drive the U-shaped frame to move forwards and pushes the sliding plate to move upwards, and the sliding plate upwards drives the limiting rod to be inserted into the fixing groove to complete fixation. The problem that most of existing fences are fixed through bolts and prone to loosening and