The invention discloses a final transmission structure, a bulldozer and a turning control method, and relates to the technical field of bulldozers. In the final transmission structure, a steering brake unit comprises a brake, a driving hub, a clutch and a driven hub, wherein the brake is connected with an input shaft through the driving hub, the clutch is connected with a transmission unit througha driven hub, and the brake and the clutch can be selectively unlocked or locked. A first planetary gear ring and a second planetary gear ring form a planetary gear ring of an integrated structure. The bulldozer comprises an engine, a hydraulic torque converter and a gearbox which are connected in sequence. A central transmission structure is connected with the gearbox. A left final transmissionstructure and a right final transmission structure are both connected with the central transmission structure and are both of the final transmission structure. The bulldozer is adopted in the turningcontrol method. The final transmission structure can bear larger torque when rotated leftwards or rightwards, and torque transfer is stable. The turning control method has the large or small radius turning ability, and is high in universality.