High-reliability radio-frequency coaxial connector for outer space

The invention discloses a high-reliability radio-frequency coaxial connector for an outer space. The high-reliability radio-frequency coaxial connector comprises an external conductor combination piece, an insulation medium combination piece, a welding pin, an insulation spacer, a welding lining sleeve and a tail threaded sleeve. An external conductor and a second external conductor form the external conductor combination piece, a first exhaust hole is formed in the first external conductor, a second exhaust hole is formed in the second external conductor, equivalent balance of air pressures of a cavity in the electrical connector and an external environment is ensured in a space environment by arrangement of the exhaust holes, low-air pressure discharging and micro discharging are prevented, so that the power endurance capability of the high-reliability radio-frequency coaxial connector is improved; and an insulation medium of a round disc is employed, blind holes are alternatively formed in two sides of a d