High-temperature, large-current and high-voltage connector plug

The invention provides a high-temperature, large-current and high-voltage connector plug, comprising an insulating sleeve, a bolt sleeve, an outer conductor sleeve, a clamping ring, a nut, a pressing sleeve, a pressing line sleeve and a jack shaft which are horizontal and coaxial, wherein the jack shaft is internally provided with a first placing chamber and a second placing chamber, which are arranged front and back and are separated from each other; the first placing chamber is internally and sequentially provided with a first step, a second step, a third step and a fourth step from front to back; the first placing chamber is internally provided with reeds which are respectively arranged between the first step and the second step and between the third step and the fourth step; and a plurality of grooves are formed on the periphery of each reed, the surfaces of the reeds are plated, and the reeds are made of high-temperature-resisting elastic alloy. When the plug is matched and connected with a socket, high-temperature-resisting and high-voltage-resisting coaxial elastic contact is formed between the jack shaft and a contact pin shaft of the socket, a contact resistance is effectively reduced, the temperature rise is small, and a large current can be born, so that the high-temperature-resisting performance of the plug is excellent.