In this paper the South-Asian high is studied as to its strong/weakpart by using the comprehensive index, with emphasis placed on thefeatures of the monthly mean circulation at 30 and 50hPa in the stra-tosphere during its earlier stage. Results show that significant dif-ferences exist in the high-latitude stratospheric circulation during thespring of the year when the South-Asian high, as well as the tropicaleasterlies to its south, is extremely strong/weak.For example, Aleutianhigh enters the polar region early/late, the latitudinal geostrophic windin high latitudes in early spring is enormously weak/strong, and theamplitude of wave 2 along the latitude in April is anomalously weak/strong.In fact, this suggests that the early/late reversal of the circulation ofspring in the middle and lower stratosphere is in correspondence withthe strong/weak South-Asian high in summer. Besides, the possibleprocesses of the variations is briefly discussed.