The invention relates to a preparation method of a dye liquor capable of improving the dyeing performance and static electricity resisting property of a fabric paint, and belongs to the technical field of textile printing and dyeing. According to the preparation method, cellulose powder is subjected to a static electricity resistant treatment under ultrasonic waves; then static electricity resistant cellulose powder is added into a dye liquor to prepare a paint dyeing dye liquor; because the dye liquor contains static electricity resistant cellulose powder, when the dye liquor is used to dye fabrics, the static electricity resistant cellulose powder is transferred to the fabrics, and the static electricity resistant performance of the dyed fabrics is improved. The cellulose powder can be dyed and then subjected to a static electricity resistant treatment, and colored static electricity resistant cellulose powder is added into the dye liquor to generate a color mixing visual effect. Thedye liquor preparation process is simple and easy to operate and the preparation method can be applied to industrial production.