ZQ203/100 drill power tong is a new type of mechanize tool on drilling floor. The tong is made of the upper tongs and low tongs. Open head design allows the tongs to be or off whenever the drilling is necessary. The tongs can take 15 or 20 seconds to finish an operation of making up or breaking out. Only one man is necessary to operate the handle of hydraulic and pneumatic valves. Crew members expressed their satisfaction that the operation is very safe, reliable, labour saving and preventing drilling pipe from banding.In addition, the torque is easily controllable. Especially, it showed excellent performance in special operations, such as coring, accident handing, etc. The tongs have been used and got popularity in oil fields in China.