Abstract: As we know,the Dutton index is of better indicating capability for turbulence cases,therefore,in this essay,we aim to employ the (NCAR / NCEP) data to draw the distribution of Dutton index,and then,to actualize the analyzing and statistics of the Dutton distribution images,finally to find out the high-incidence turbulence areas.Our conclusions are as follows:turbulence areas account for about 20% of the region (100°—150°E,15°—60°N);severe turbulence areas account for about 46% of the bump region, severest turbulence areas account for about 22% of the turbulence areas,and moderate turbulence areas account for about 32% of the turbulence areas.Meanwhile,based on a large number of image and data statistics,we have found the high-incidence turbulence areas:On January,the moderate turbulence and the severe turbulence areas are distributed sporadically,however,the severer turbulence areas mainly cluster in the north China (110°—120°E,30°—42°N).