High pressure ball valve designed with simple structure, small overall dimensions, fast in switching, less in flow resistance and convenient for pneumatic and electric control. Stem adopt two-way sealing structure available for preventing the leakage, also can add anti-static device. End connection have wafer type, flange type and welding type etc, seat are available with soft seal or hart metal seal, can be used in areas of high temperature and high pressure fluid conditions, such as daily chemicals, fine chemicals, biochemical technology, pharmaceutical, shipbuilding and etc.