This paper introduces the meaning of comparison basis,analyzes the reason and reasonless of taking transportation capacity as comparison basis between roadway and railway land use,and puts forward that it has real instructive meaning to take transportation need and economic-social effect as comparative basis.

At present our country labor force essential factor comparative advantage merely displays in the quantity,still belonged to the comparative advantage foundation of low level labor force characteristic,should promote the labor force factor to technical factor,the human ca.