Abstract: Objective Using foxtail millet varieties Yugu 18 as materials,this experiment aims to study the effect of nitrogen application amount on the growth and yield of foxtail millet in the hope of providing scientific basis for nitrogen reasonable application amount of foxtail millet by drip irrigation under the condition of drip irrigation of mulch in Xinjiang.Method Through the field test,the plant height,ear length,single ear weight,biomass and yield etc.were analyzed under the condition of different nitrogen application amounts.Result Ear length,single ear weight,biomass and yield demonstrated a trend of increasing first and then decreasing.Nitrogen application amount had not significant effect on the plant height during the growth of foxtail millet by drip irrigation under mulch.Conclusion The best nitrogen application amount of foxtail millet by drip irrigation under mulch was 180 kg/hm2 under this experiment condition.