The carrying capacity of water resources is the important indicator of sustainable development of the nature,
economy and society. The aim of researching is to solve the contradiction between the present water resources carrying
capacity and the load of water resources carrying capacity. Applying principal component method to evaluate water
resources carrying capacity in Handan City according to indicators from 2006 to 2012, this paper analysis the reason for
the carrying capacity of water resources changing to find out the main influencing factors. It is useful for policy-makers,
environment protection and sustainable utilization of water resources.