Abstract
Necessity of ethical principals for eco-engineers was examined. In Western countries, ethical principals or standards and guidelines have been stipulated and maintained by scientific societies for engineering. In Japan recently, numbers of scientific societies that state ethical principals or standards are increasing rapidly. It was considered that establishment of ethical precepts is getting to be a necessary condition to be accepted by society or global society. Ethical problems on Eco-engineering studies were also examined. As a result, various types of problems, including engineering, ethics, environmental ethics and medical ethics, were found out. We confirm eco-engineers' responsibility for human society and propose to discuss ethical principals or standards for eco-engineers.
