Abstract: Based on the comparatively complete surface datawe have analyzed the dishibutions of presure, wind, rainfall weather as well as their interrelations of four intense typhoons which invades the continents. The main results are as follows:(1)The pressure distribution within a typhoon varies considerably with its direction of motion. The filling of a typhoon is a function of its radius.(2) The wind distribution within a typhoon is considerably influenced by the earth's topography. The distribution of convergence agrees well with the rainfall distribution.(3) After invading the continent the rainfall distribution may be classi-fled into three types, namely symmetrical type, asymmetrical type and accoiding to the stage of its development.(4) Just after invading the continent there are two entirely different types of weather near the center of typhoon, namely clear and quite weather and violent rainfall. In conclusion, the structure of typhoon changes considerably when it enters the westerlies from the easterlies. On the other hand its structure is influenced appreciably by the land and sea and the earth's topography.