Abstract: Data of Beijing water resources from 2001 to 2012 was collected.Through years of water resources changes，total amount of water resources，surface water resources amount and overall change pattern of groundwater resources were analyzed.With economic and social changes in recent years in Beijing，especially in the context of increasing population，based on‘5 water’joint configuration theory support，fluctuations in the water supply amount steady condition，a basic science，recycling and sustainable utilization of diversified water supply pattern was formed through the joint allocation of surface water，groundwater，recycled water，south to north water and emergency water supply.Per capita water resources amount increases at the speed of 3.2%.It indicated that water resources of Beijing change trend was good.