This paper has been devetoped aconception model, working progrem and analysisng method of studying the land source carrying with the system scientific way, On the basic of above, we have analysed the land source carrying capacity and affect on its factors with the synthesis method in SHANG HUANG experiment area, we put forward thebasic policy of ensuring the food— population coordination development and of averting from destroying the frgile ecological enviroment at present the social and economic condition.