The invention discloses a preparation method for a polybutylene succinate/graphene-molybdenum-disulfide-like nanocomposite material. The preparation method comprises the following steps: adding molybdenum disulfide powder to mixed liquid of butanediol and water, and centrifugally separating after the room temperature liquid phase ultrasonic treatment; adding a succinic acid to upper deep green liquid obtained by the centrifugal separation, strongly and mechanically stirring until no water is generated in 150-225 DEG C of the temperature under the nitrogen protection, to obtain a terminal hydroxyl prepolymer containing the graphene-molybdenum-disulfide-like; rapidly adding a catalyst to the terminal hydroxyl prepolymer under the stirring condition, and warming to 210-250 DEG C, and vacuumizing to 50-250 Pa, continuously stirring until the obvious pole-climbing occurs, and ending the reaction, to obtain the polybutylene succinate/graphene-molybdenum-disulfide-like nanocomposite material.The composite material is capable of improving the crystallization temperature of the polybutylene succinate, shortening the crystallization time, and refining the crystal grains of the polybutylenesuccinate.