Taking the Chaohu Lake as an example, the analysis of the pollution problem of the Chaohu Lake environment reflects the predatory development and utilization of the Chaohu Lake by human beings on the surface, but in fact, the deeper reason is the environmental ethical dilemma. This study intends to study lake environmental protection from the perspective of environmental ethics, which not only opens up a new perspective of lake environmental protection research, and provides new countermeasures to solve lake environmental problems, but also has important reference significance for lake environmental governance in China.