Abstract: On the society ethics, Hardy held the view of meliorism society ethics, which was effected by Darwin-s theory of evolution. He thought that in order to exist in the unchangeable predicament, mankind had to adapt themselves to circumstances, improve the bad relation between the person and the society, and improve the human existence circumstances. His notion of how to adapt to the environment to realize a harmonious relation between mankind and the environment was enlightened by Wessex residents folk society ethics which was embodied from their life style.The folk society ethics perfected the constitution of meliorism . The Wessex folk ethics played an important part in the ethics moral construction of Hardy-s novels.