The changes are evident on the economy of Thailand in the AEC. The Economic of Thailand change in many aspects which Thailand had to prepare for this change because , the movement of people and its more liberal which may be cause impacts across boundaries. The neighboring countries of Thailand have the similar culture, goods and service can complement or similar product which can strengthen its about the negotiating power. This will entail a trade-driven economy is of paramount importance. In addition, the integration of the ASEAN Economic Community makes the large emerging markets in the region. AEC will help foster the expansion of trade and investment of Thailand. Therefore, the government needs to encourage the people of Thailand known about AEC in order to prepare step to AEC.