Based on the description of 4 shape-parameters of statistical distribution indices of aggregation and the regression analysis of population spatial pattern, the spatial pattren dynamics of aphid populations was elucidated to be as follows: 1 . In the whole season the spatial distributions were of the contagious type with positive skewness and steeper pesk than normal distribution. 2 .the Fuzzy cluster aggregation states may be classified as types of early, middle and late stage in fall crop and types of early and late stage in spring crop with different densities and aggregations. 3. The method of sampling, wether random or sequential, and methods of transformation of raw data could conveniently be determined and realized with the aid of parameters obtained in the Taylor's power law or two M*=M regressions.