The invention discloses a revolving locking device of a regenerating train. The revolving locking device of the regenerating train comprises a secondary beam, a front axle and a back axle, wherein a revolving locking component comprises a revolving platform, a transverse oil cylinder, a locking pin, a locking pin fixing seat and a locking ring respectively; the front axle and the back axle are provided with a transverse oil cylinder fixing seat respectively; transverse oil cylinders are arranged among the transverse oil cylinder fixing seats and the secondary beam respectively; the locking pin fixing seats are arranged at the bottom of the secondary beam respectively; the locking rings are arranged on the front axle and the back axle respectively and are located below the locking pin fixing seats; the locking rings are provided with multiple fixing sleeves. Through the above way, according to the revolving locking device of the regenerating train, the front axle and the back axle can revolve under the push of the transverse oil cylinder, so as to change an advancing angle; by utilizing the cooperation among the locking pins and the fixing sleeves, the wobble of the revolving platforms is avoided, and the precision of a running trajectory is promoted.