The present application relates to the mechanical technical field, specifically a kind of single motor can pull out gun safety catch and the linkage mechanism of gun mechanism and its driving method, including with driving mechanism connection driving gear;Gun rack, the gun rack is equipped with a section of toothless structure and driving gear cooperation, to make the driving gear when positive rotation and gun rack not mesh, when reverse and gun rack mesh;With driving gear connection follow-up rod;Open with rotary groove follow-up gear, the follow-up rod and follow-up gear rotary groove cooperation connection;Still include safety catch gear and gun rack gear, the safety catch gear and follow-up gear mesh, the gun rack gear and gun rack mesh.The present application compared with prior art, its advantages are that: the overall structure of the present application is relatively simple, high reliability, it is convenient for operator to operate while being convenient for maintenance overhaul;The linkage mechanism of the present application has the characteristics such as structure simplification, high reliability, wide applicability.