Abstract: Based on the drought treatment technology researching of potato seed before sowing,In the period of potato growing, We have been mainly determined and analyzed Potato Seedling, Physiological Indexes（ SOD, POD, Chlorophyll, Proline, Soluble Sugar ）and Photosynthetic Indexes in the different treatment, and analysised the data of potato yield and water use efficiency, the results showed that： applying Han li ring aquasorb can increase the potato drought resistance, and the water use efficiency of potato improved obviously, it is increased by 21.25% then CK.