Combined RS and GIS technique, the procedure and method of using TM to analyze the dynamics of reclaimed coastal land is studied, and the dynamics of Western Guangdong is analyzed. The results show that: (1) the proposed remote sensing procedure is a simple and suitable method to inspect the dynamics of reclaimed coastal land. (2) Up to 1997, 60 460 hm~2 coastal land had been reclaimed, among which, 47 936 hm~2 before 1987, 12 524 hm~2 after 1988. (3 ) Before 1987 , the reclaimed coastal lands were mainly used for agriculture, it covered 98 .41 % of the total area, and its utilization rate is 73. 71 %. (4) After 1988, the reclaimed coastal land for aquaculture developed rapidly, and the scale of construction was enlarged. The aquaculture land covers 92. 18% of the total agricultural land; 36. 76% higher than those before 1987. The utilization rate was 22. 32% higher than that before 1987. The land area for construction is 1 073 hm~2, and for city construction is 2. 26 times than 1987.