The invention discloses a continuous machine tool for machining coals into ball structures. The continuous machine tool comprises a machine tool frame, wherein a first conveying mechanism, a primary coal screening mechanism, a second conveying mechanism, a coal breaking mechanism, a third conveying mechanism, a primary centrifugal dewatering mechanism, a fourth conveying mechanism, an air compression mechanism, a fifth conveying mechanism and a ball forming mechanism are arranged on the machine tool frame; the ball forming mechanism comprises a compression barrel, a sealing chute is arranged in the compression barrel, a compression plate is arranged in the sealing chute, a support frame is arranged on the compression plate, hydraulic lifting mechanisms are arranged on the support frame and connected with extrusion blocks arranged on the compression plate, a ball-shaped mold groove is formed in the bottom of the compression barrel, and an accommodating chamber is formed below the ball-shaped mold groove. With adoption of the continuous machine tool, the dimensional accuracy and the shape accuracy for machining the coals into the ball structures are improved greatly, the surface tightness of the ball coals is improved, the fuel using efficiency is increased, better safe use performance is realized, and actual use requests are met.