Abstract: The Laizhou Bay area is located in the north coastal zone of Shandong Province, China. In order to investigate the sensibility of water resources and extremes to climate fluctuations, the annual regional precipitation series (1960-1993) is divided into more precipitation and less precipitation periods equally at the point of 1976. In the wet period (1960-1976), average precipitation is 12% more than the normal. In the dry period (1977-1993), average annual precipitation is 12% less than the normal. In the wet period, regional total water resources is 26% more than the normal, while in the dry period, regional total water resources is about 27% less than the normal. Ten percent increase in precipitation will cause about 20% percent increase in total water resources. Ten percent decrease in precipitation will result in about 20% decrease in total water resources. Regional water resources is very sensitive and fragile to the climatic fluctuations. During the wet period, extreme waterlogging occurred four times, while during the dry period it only occurred once. The frequency of extreme waterlogging in the wet period is much higher than that in the dry period. During the dry period, extreme drought occurred four times but it only appearred once during the wet period. The frequency of extreme drought in the dry period is much higher than that in the wet period. The frequencies of extremes also show their sensibility to the climatic fluctuations. Based on the future climate secnarios in Huabei region, impacts of climate change on water resources in 45 years (1998-2042) are investigated primarily.