The invention relates to a method for improving the dispersion efficiency of cellulase on organic pigments, and belongs to the technical field of textile dye printing. The method uses the following processes of adding cellulase with the mass concentration being 1g/L in water; then, adding hexadecyl trimethyl ammonium chloride with the mass concentration being 0.1g/L and octaphenyl polyoxyethyienewith the ethylene oxide number being 15; performing treatment by a dispersion machine being 10000r/min for 2min; adding organic pigments with the mass concentration being 20g/L; and performing ultrasonic treatment for 15 to 50min. Cationic surface active agents of hexadecyl trimethyl ammonium chloride and nonionic surfactants of octaphenyl polyoxyethyiene are used in a way of being cooperated withcellulase; the time required for dispersing the pigment to the target granularity can be obviously reduced.