In order to select new potato varieties with high quality and high yield suitable for planting in Longjing city, six potato varieties were introduced in 2018 for comparative screening test, and investigation and analysis were carried out from the aspects of phenology, plant morphological characteristics, field traits, tuber traits and physiological defects, main diseases and yield. The results showed that Yanshu 10 and Yanshu 12 had shorter growth period,better fertility, higher commercial potato rate, lower secondary growth rate and split potato rate than the control group. Longshu 11 has a longer growth period, lower commercial tuber rate, slightly higher secondary growth rate and split tuber rate than other varieties, but its yield ranks the third, which is significantly higher than CK1 and similar to that of CK2. Therefore, it can be used as a substitute variety to promote planting in Longjing. Other varieties with low yield and poor comprehensive characters were eliminated.