A new variety of potato-Zhongshu No.3 has the characteristics of put forth seedlings early and regular, high yielding, great potentialities of increase production, a good many big and medium potato, good potato that it hasn’t crack and green peel, strong resistance with Streptomyces scabies Waks et Henrici, a little longer growth stage. Zhongshu No. 3 taking the place of Dongnong 303 becomes staple variety of potato in Zhejiang. The key techniques for spring high yielding cultivation of Zhongshu No.3, select and handle seed, seed on time, close planting rationally, apply basic fertilizer enough, cover membrane, strengthen manage, prevent diseases and insect pests.