Jidan 27, Xianyu 335 and Zhengdan 958 were used as controls, 5 new maize varieties introducedfrom USA were compared. Results showed that the yields of all varieties were significantly or extremely significantlyhigher than control Jidan 27, except for Y1301, which difference was not significant. In spite of the growth period ofall varieties were matured earlier than Xianyu 335 and Zhengdan 958, but in addition to Y1301, yields of the rest 4varieties were higher than the control Xianyu 335 and Zhengdan 958, the difference was not significant. The experi-ment proved introduced varieties have good yield potential, so the direct introduction of varieties is feasible, but fur-ther screening on different sites is needed.