The invention provides a radio frequency mechanical switch. The radio frequency mechanical switch comprises a movable contact spring, elastic clamping pieces, a direct-through line, an attenuation piece and an electromagnetic relay, the elastic clamping pieces are fixed at contact points of two ends of the attenuation piece, and the movable contact spring directly contacts with the elastic clamping pieces in the switching process. By means of the radio frequency mechanical switch, the problem of fatigue failure of the contact points of attenuation pieces can be solved when existing radio frequency switches of program control step attenuators are frequently switched, reliability, repeatedly switching consistency and adaptable performance to mechanical stress are good, the service life of products is prolonged, the problem of reliability of repeatedly switching of the movable contact spring can be solved, corresponding processing measures are not required to be independently added in the machining and assembling process, the radio frequency mechanical switch is simple and convenient, the product percent of pass is increased, and producing costs are lowered.