Export Processing Zones (EPZs) are about thirty years old now (ILO and UNCTC. 1988). Their effects and influence on third world economic development and on international industrial restructuring have been criticised by different literatures. I wish to combine my practical experience of working in Shenzen Special Economic Zone for four years, with research to compare four EPZs’ development in four East Asian countries and area: Massan Zone in Korea, Kaohsiung Zone in Thailand, Shenzen Zone in China and Lat Krabang Zone in Thailand. This intended to explore the effect of EPZs on the economic development of those countries, and to provide a series of comparative data (especially on the zone of China about which there is little information).