In this paper,two measuring parameters (e.g.station domain area and network density) of heterogeneity network from 160 stations in China are defined,which are calculated for presetting the spherical coronary area S0=50×104 km2,and their rationality is demonstrated.By use of them,the first weight function is constructed for calculating mean climate value and mean square deviation of air temperature of the network from 160 stations in China in January,April,July and October,in such a way that a reasonable result is obtained.Meanwhile,the second weight function is constructed,which is used to adjust anomalous air temperature of time series,and EOF(empirical orthogonal functions) analysis are carried on the original and the adjusted data.It demonstrates that EOF analysis result of the adjusted data is superior to that of the original data.