Prestressed well cover

The utility model relates to a prestressed well cover, which is provided with hoops round the well cover and steel reinforcement fixedly connected with the hoops, wherein concrete is filled in the hoops and round the steel reinforcement. The central position of the utility model is provided with a connecting plate, and the steel reinforcement is tensioned to the center of the utility model from the circumference of the utility model, is fixedly connected with the connecting plate and is surrounded and fixed in a tension state by concrete. The utility model especially forms the structure that the steel reinforcement is connected to the connecting plate from the hoops to the center along a radial direction and is sloping downwards. Transverse ribs which are connected transversely along the steel reinforcement form spider web-shaped stretching steel reinforce structure. Formed prestressed well covers can effectively prevent the brittle crash and the fracture of concrete of the well covers.