At various pulse electric field ( PEF) strength ( 0. 0,2. 5,5. 0,7. 5,10. 0 and 12. 5kV/cm) and pulse wave number ( 0,180,360,540,720 and 900) ,rice starch-Zn complex was prepared via the reaction of rice starch with zinc acetate ( 0. 001mol /L) ,and the Zn content in the complex was determined,finding that,under the optimal conditions for preparing rice starch-Zn complex,namely a PEF strength of 7. 5 kV/cm and a pulse wave number of 360,the zinc content of the sample increases from 468. 24 mg /kg to 738. 62 mg /kg,which means that PEF can promote the reaction of Zn with starch.Besides,the optical characteristics and structural properties of rice starch-Zn complex were investigated by means of SEM,IR,X-ray photoelectron spectrometry and XRD.The results show that zinc acetate reacts with the hydroxyl groups of glucose units on rice starch; and that,with the increase of PEF strength and pulse number,the surface of rice starch particle is damaged,the relative degree of crystallinity is decreased,the coordination reaction is promoted and the amount of rice starch-Zn complex is increased.