The invention discloses a high-strength cock valve. The high-strength cock valve comprises a valve body, a cock and a valve cover, wherein the valve body is provided with a hollow cavity; the cock is provided with a handle part and a conical part; the valve cover is used for containing the conical part in the hollow cavity; a communicating opening which is communicated with the hollow cavity and a plurality of side through openings are formed in the valve body; the communicating opening is positioned in an opposite position of an outlet of the hollow cavity; the side through openings are formed in one side of the communicating opening; flanges are arranged outside the communicating opening and the side through openings; the flange of the communicating opening is connected with the flanges of the side through openings through connecting parts. According to the high-strength cock valve disclosed by the invention, the connecting parts are arranged between the flanges of the communicating opening and the side through openings of the valve body, thus the strength of a valve body structure is increased, the creep deformation of the valve body under a load bearing situation is avoided, and the service life of the valve is prolonged.