Theftproof connecting device of whole well head production tree

The utility model relates to a theftproof connecting device of whole well head production tree. Its technical scheme is: being equipped with the backing ring groove on the well head of lower part, being equipped with sealed backing ring in the backing ring groove, be equipped with the theftproof clamp in the periphery of upper portion well head, upper portion well head and theftproof clamp are equipped with the guard shield through direction bolted connection in the outside of clamp piece, are equipped with fixing bolt in the lower part of guard shield, and the backing plate is equipped with to last the overlapping of fixing bolt, and backing plate upper portion is the clamp piece, and clamp piece upper portion is equipped with fixation nut. The beneficial effects of the utility model are that: be applicable to oil field oil, the theftproof of well production tree clamp, installation, dismantlement convenience are stopped to lose the environmental pollution and blowout hidden danger who causes because of the