Northwestern area is the most arid and underdeveloped area in China. Lots of researches have been doneto find the approaches to alleviate poverty. But there are some problems, for example, how to invest, how to use capital,and why the utilization rate is ambiguous. Water, capital and human resources are analyzed in this paper to be comparedwith their Utilization rates. As a result, according to the dependences of economic growth on those resources, a newapproach has been selected to organize the integration ways among these resources for economic development innorthwestern China. The efficient ways to develop northwestern China are: firstly, use the wanting resources mosteffectively to make an efficient integration model of multiple resources. For example, enhance the utilization rate of waterto raise the value of other resources. Secondly, invest more in basic factors for economic development to upgrade thecompetitiveness in the western China. For example, invest more in primary education and sustainable development ofbasic natural resources in order to have more power for sustainable development. Northwestern area is the most arid and underdeveloped area in China. Lots of researches have been doneto find the approaches to alleviate poverty. But there are some problems, for example, how to invest, how to use capital, and why the utilization rate is ambiguous As a result, according to the dependences of economic growth on those resources, a newapproach has been selected to organize the integration ways among these resources for economic development. Innorthwestern China. The efficient ways to develop northwestern China are: first, use the wanting resources mosteffectively to make an efficient integration model of multiple resources. For example, enhance the utilization rate of waterto raise the value of other resources. Secondly, invest more in basic factors for economic development to upgrade thecompetitiveness in the western China. For example, invest more in primary educa tion and sustainable development ofbasic natural resources in order to have more power for sustainable development.