提出了工程师个人价值观、社会文化、技术效率和自然环境状况是制约和影响工程师伦理取向４个 关键因素的观点，并探讨、分析了这４个因素是如何对工程师的伦理选择和道德取向产生影响和作用的。

This paper regards that individual value view ; social culture, technological efficiency and environment are the key factors that affect engineers' ethical tendency. And it discusses how the four factors affect the ethical sele ction and moral tendency of engineers in history and logic.