The high pressure high production and high sulfur content wells after uncontrolled fire shall be with big fire at the wellhead, high thermal radiation and high impact strength of fluid, which is with high requirements for emergency technologies and equipment. As the most critical and most difficult role in the rescue of blowout out of control in high pressure high production and high sulfur content wells, wellhead resetting is faced with bottleneck problems such as difficulty in running the new wellhead, difficulty in aligning the connecting flanges and personnel with difficulty to access the wellhead. The traditional buckle covering method and rotating to alignment method have been unable to complete this task. In such cases, through tackling the key poblems, CNPC Chuanqing Drilling Engineering Company has developed three wellhead resetting methods such as wire pressurized method which is with flexible operation, wide application scope, easy to realize the centralization and with short centralization time, gravity pressurized method which can overcome the upward impact force of high pressure flow on the new wellhead, and the integrated resetting method which is integrated with the clamping device and sealing device and can realize the remote one - button control. The key technology and equipment used in the wellhead resetting of uncontrollable blowout in high pressure high production and high sulfur content wells has played an extremely important role in the disposal of uncontrollable blowout fire in several wells in Turkmenistan, Sichuan and Chongqing region and Xinjiang region. At present, the technology has reached the international advanced level.