Abstract: The Heterogeneous Wireless Sensor Networks (HWSN), which is more univeral, shows a lack of the study for coverage force sections. Therefore a novel localized method for analyzing the distribution of coverage forcethe Coverage Force Algorithm (CFA) is presented. Depending on sensors own sensing abilities in HWSN, CFA can obtain the General Voronoi diagram and achieve section of coverage force for each node. Fortunately, simulations confirm that the CFA is able to solve the problem of analyzing coverage performance in HWSN. Compared to the traditional Voronoi diagram, the propsed algorithm shares the localized and general feature.