The utility model relates to a radio frequency coaxial connector, which comprises a housing, wherein a contact hole is arranged on the housing, and a contact piece is fixedly inserted in the contact hole, the contact part comprises an outer conductor, and the inner hole of the outer conductor is provided through The inner conductor of the insulator is fixed in the outer conductor, the front end of the contact member is inserted into the mating contact member, and the rear end of the contact member is fixedly provided with a glass seal member made of glass and matched with the outer conductor to form a shield cavity, and the glass seal member The intermediate conductor is provided with an adapter conductor, and the inner end of the adapter conductor is connected to the inner conductor, and the outer end of the adapter conductor is connected to the circuit. The rear end of the contact member is provided with a glass sealing member which cooperates with the outer conductor to form a shielding cavity, and the connecting conductor disposed inside the glass sealing member connects the inner conductor with the circuit, so that the inner portion of the outer conductor forms a completely shielded cavity. A good electromagnetic shielding and air sealing is realized, and the signal transmitted in the contact member is effectively prevented from being electromagnetic interference from the outside.