The invention relates to an automatic grease fluid proportioning and supplementing centralized vehicle for a fully mechanized coal mining face. The automatic grease fluid proportioning and supplementing centralized vehicle for the fully mechanized coal mining face comprises a vehicle body, an emulsified oil centralized box, an emulsified oil introducing device, and an automatic fluid proportioning device, wherein the vehicle body is used for bearing the emulsified oil centralized box; the emulsified oil introducing device and the automatic fluid proportioning device can move along with the mine production requirement; the emulsified oil centralized box is used for centralizing and storing multiple barrels of emulsified oil; the emulsified oil introducing device is used for introducing the barreled emulsified oil into the emulsified oil centralized box; the automatic fluid proportioning device comprises a cavity, a proportioned fluid outflowing hole, a clean water inflowing hole and a grease inflowing hole, wherein the clean water inflowing hole is connected with a clean water source by a pipeline, the grease inflowing hole is connected with the emulsified oil centralized box by a pipeline, and the proportioned emulsified fluid can be injected into the emulsified oil centralized box through a pipeline via the proportioned fluid outflowing hole. The automatic grease fluid proportioning and supplementing centralized vehicle can effectively solve the problems that the automatic emulsified fluid proportioning and supplementing cost is high, the management and operating procedures are complex, the fault rate is high, the labor intensity is high, the precision is low, and the potential safety hazard that more greases are piled up under the shaft exists, and besides, the service life of the equipment can be effectively prolonged.