Cut insulating aerial working platform car of fork. The utility model provides a simple structure, convenient operation improves the cut insulating aerial working platform car of fork of operation reliability and security. Which comprises a carriage body, be equipped with locomotive and carriage on the automobile body, be equipped with the platform subassembly of connecting through scissors mechanism in the carriage, the platform subassembly includes the bracket, encloses the platform and promotes the hydro -cylinder, the bracket with enclose the platform and be glass steel matter, the both sides of bracket are equipped with a pair of guide rail, the bottom surface both sides of enclosing the platform are equipped with a pair of guide pin bushing, guide pin bushing adaptation ground cover is established on the guide rail, the promotion hydro -cylinder is located and encloses between platform and the bracket, the cylinder body that promotes the hydro -cylinder is established on the bracket, and the liquid bar connection who promotes the hydro -cylinder encloses the platform for it establishes to enclose a horizontal anomalous movement on the bracket. The utility model discloses at work, can act on with electricity, adapt to the line?Tower's on the rural areas country road operation, improve work efficiency, reduce intensity of labour.