[Objective] Differences of soil nutrient contents was mainly studied under different altitude of Mountain Lu .[Method]Selecting three typical soil ( mountain red soil,mountain yellow soil,mountain brown soil) of Mountain Lu region,organic matter,total N,available P,available K of different levels were analyzed,clarify difference of the vertical distribution of soil nutrients was explored under different altitude in order to fur-ther understand the forming causes of differences.[Result]Affected by natural factors (climate,temperature,vegetation types and litter,etc.) and human factors (different ways of land use and pollution,etc.),the content of organic matter in soil was positively correlated with altitude.The content of total nitrogen in soil increased with increasing altitude.There was significant spatial difference in available phosphorus,but no signifi-cant correlation with altitude.Available potassium was negatively correlated with altitude.And the total nutrient content of soil was mountain brown soil>mountain yellow soil>mountain red soil.[Conclusion]This result is of great significance to the deep understanding of the vertical distribution of mountainous soil and the improvement of soil resource utilization.