This study was conducted to determine the effect of the different slow release organic chemical complex fertilizers on summer corn yield and nitrogen use efficiency by field experiment.The results showed that significant increase in yield and nitrogen use efficiency by the different slow release organic chemical complex fertilizer application was found.Compared with the conventional fertilization（combined application of organic manure and chemical fertilizers） with respective same application rates of N，P2O5 and K2O，the felted slow release organic chemical complex fertilizers（T3），the felted and coated slow release organic chemical complex fertilizers（T4），and the felted and coated slow/controlled release organic chemical complex fertilizers（T5： 30%T3+70%T4） respectively increased by 79%，149% and 201% for summer corn yield，85，180 and 253 percentage point for nitrogen recovery rate，and 71%，133% and 177% for agronomic efficiency.Time asynchronous of nutrient supply and demand was one of the most important factors contributing to high effectiveness of the felted and coated slow/controlled release organic chemical complex fertilizers and its high nitrogen use efficiency under this condition.