How to dispose rural trashes is currently a difficult issue concerned by the whole society. Whether rural trash treatment is proper is related to stability of rural environment， the happiness of farmers life and the harmony of rural society. By theoretical study and spot survey， we find that a part of farmers in Taihu Lake basin have made good achievements for rural trash treatment based on their rural reality. In the process of the rural trash treatment， the farmers changed their environment consciousness， changed their improper behavior， understood the intrinsic connection between environment protection and economic development， and has reached a kind of “ecological consciousness” status. The practical model of farmers trash treatment behavior change in Taihu Lake basin not only has good ecological benefit but also realizes economic benefit growth and social benefit expansion. In addition， after deep analysis of the studied case， this paper summarizes the generating and developing laws for farmers ecological consciousness behavior and provides experience and enlightenment for environment regulation in future rural trashes treatment.