The densities and distribution of resting eggs of rotifers in deposits were investigated at three areas of Donghu Lake in August 1992 to July 1993.The results show that the densities of resting eggs of rotifers decreased with the increase in depths of deposits from zero to 35cm.The pattern of vertical distribution of resting eggs was found to be rfV in shape.The abundance of resting eggs increased with the increase in water trophic level.The annual average of abundance (Aug., 1992~July, 1993) of resting eggs for the three regions were as follows: the hypertrophic region of Shuiguohu Lake (Station Ⅰ),1.32ind./cm³; the eu-trophic region of Guozhenghu Lake (Station Ⅱ),0.74ind./cm³; the eutrophic-mesotrophic region of Tanglinhu Lake (Station Ⅲ)%0.71ind./cm³.Monthly fluctuation of the abundance of resting eggs in found was found in Donghu Lake during August 1992~July 1993.The peaks were recorded in April(l.35±0.58incl./cm³), September(1.20±0-64 ind./cm³) and January (1.12±0-62ind./cm³).Monthly changes of densities at upper 0~5cm depths of deposits were obvious, and its ranges were great.The changes became irregular and the ranges became small with ihe increase in depths of deposits.Resting egg densities in different waters and rhe ways-concerning the use of resting eggs in deposits were discussed.