Based on average temperature and precipitation data of Benxi from 1953 to 2005, the land surface precipitation coefficient ,evaporating coefficient and available precipitation are calculated by means of Takahashiempirical formula of land surface evaporation. The results show that the changes in water resource and changes in precipitation characteristics are similar. Interannual variability of precipitation is remarkable, precipitation distribution for each season is unequal, the overall decrease trend of precipitation is obvious, spring is the season which is easy to bring about drought due to considerable evaporation loss. Some measures of alleviating and solving issue of water resource scarceness have been proposed: artificial stimulation of precipitation, increasing revenue and reducing expenditure of water conser vation, water management and controlling water loss and soil erosion.