Abstract: By the diagnostic method and the cloud top black body temperature of the GM S-5 satellite infrared images,the preliminary analysis of the larger scale environment of the rainstorm and the meso-scale behavior of the cloud clusters was made for the Huanan rainstorms meso-scale behavior of the cloud clusters was made for the Huanan rainstorms meso-scale experiment(HUAMEX)of 22 and 24 of May 1998.The phenomena of sequential development of meso-scale cloud clusters was emphasized,and a possible mechanism for that phenomena was propo sed which is expected toresearch by the numerical simulation.