Abstract: In order to select the new varieties of sweet corn with high yield, high quality and disease resistance suitable for the extension and cultivation in Datian County, 12 new varieties of sweet corn were introduced to be planted experimentally in Taoyuan Town and Guangping Town of Datian County in 2020. By taking Yuetian 16 as the control group (CK), the yield, output value, growth period, main characters of plant and disease resistance of each variety were comprehensively investigated. The results showed that the yields of Mintian 736, Huitan 188 and Mintian 6855 were 1391.7, 1271.7 and 1238.4 kg per 667 m², respectively, which were increased by 28.7%, 17.6% and 14.5% compared with the control group, respectively. The three varieties had good disease resistance, high and stable yield, and good comprehensive performance, so it was suggested to expand the demonstration and application. Xuetian 7401 had tender pericarp, good taste, high sweetness, milk flavor, and good commodity, which was suggested to be developed and popularized as the characteristic variety of fruit corn. The yields of Cuitian 616 and Cuitian 618 ranked the second and the third, respectively, but the bald tips of them were obvious and the commodities were poor. Yuetian No.26 had higher ear position, more ear rows and smaller grains. Yuetian No.28 had smaller grains. Zhentian 368 had smooth leaves, bald tip, and low yield. Minshuangse No.6 was moderately susceptible to leaf spot disease and its yield was low. Therefore, the above 6 varieties were suggested to continue the experiment and demonstration. However, the yields of Zhenbaitian No.6 and Shuangtian 2018 were both lower than 1000 kg per 667 m², which were decreased by 15.3% and 20.0% compared with the control group, respectively. Due to the low yield and short ear stick, they were not recommended to be demonstrated and popularized in local area.