The utility model discloses a forklift braking system special for stones. The forklift braking system special for stones comprises an air compressor, an air storage tank, an air booster pump and a braking steel tube assembly, wherein the air compressor provides an air source and is matched with an engine, the air storage tank is connected with the air compressor through a high-pressure rubber hose and used for storing air, the air booster pump is connected with the air storage tank through a high-pressure rubber hose, and the braking steel tube assembly enables the air booster pump and a brake to be connected together. An air brake valve is arranged between the air booster pump and the air storage tank so as to control air flow, and the air booster pump is controlled by air pressure and supplies hydraulic pressure to the brake. According to the forklift braking system special for stones, the braking arrangement that oil is pushed by air is adopted, air media are all arranged on the front portion of the air booster pump, the braking pressure requirement cannot be met only depending on air pressure, so that the air booster pump is used for pressure boosting, hydraulic pressure generated by the air booster pump is fed into a bridge brake through the braking steel tube assembly, a friction plate is pushed, and accordingly braking is achieved.