Global warming and sea-level rise. Geological research in Thailand has experienced on sea-level change since 10,000 years, as a consequence of changing cover of ice at the end of the last glaciations. Recently, there has been considered that human activities combined with natural fluctuations will create a rising global sea-level. For example man induced subsidence caused relatively sea –level rise by over pumping of ground water in Bangkok area. In order to investigate the nature and causes of sea-level change in Thailand. It is necessary to have a good series of measurement. There are huge uncertainty still remain over the magnitude and rate of sea-level rise in Thailand. Most of current data come from inadequate tidal gauge records, as well as regional and global data of interorganization research that is questionable through tectonic and geologic processes are difference in each coastal zone.