Phirach Chaisomkhun, Prayoon Wongchantra, Katharat Hengtragoon, The Effect of Training on Administration and Enforcement of Environmental Laws of Local Government Officers, The Social Sciences, Volume 6,Issue 6, 2011, Pages 438-440, ISSN 1818-5800, sscience.2011.438.440, (https://makhillpublications.co/view-article.php?doi=sscience.2011.438.440) Abstract: Current environmental laws to play a role in local government. Therefore, local government staff need to have knowledge relating to the administration and enforcement of environmental laws as well. This research purposes were to studies the effect of training on administration and enforcement of environmental laws of local government officers and to comparing their knowledge before and after training. The sample composed of 73 officers in Tambon administrative organization of Koeng Mueang district Mahasarakham province which have been selected by a purposive sampling technique. The research design was just one group pre- and post-test. The data collection was analyzed by percentage usage and t-test. The study results are as following; the local government officers had knowledge on administration and enforcement of environmental laws after training was rated higher that before training (p<0.05). Keywords: Environmental law;enforcement;administration;training;local government officer;knowledge