At present,the responsibility attribution in environmental ethics has become the focus of controversy,in which the argument on individual responsibility involves whether the individual can be regarded as a suitable subject of responsibility,whether individuals with high energy consumption should bear more moral responsibility and share more responsibility for emission reduction.The diffi-culty in proving individual responsibility is that the impact of individual behavior on climate change cannot be confirmed and traced because it is difficult to be intuitivelyvisible;therefore,"harmless"view and"ineffectiveness"view try to deny the necessity of individual responsibility from the perspec-tive of causal effectiveness.In order to respond to this difficult question,the defense of individual re-sponsibility should be approached from the retrospective and forward-looking perspectives of moral re-sponsibility.The hazards of climate change are divided into two categories:the established harm and the expected harm.We can analyze the relationship between the established harm,expected harm and individual responsibility in the triggering case and the imperceptible case separately,grasping the in-evitability,necessity and legitimacy of individual responsibility in environmental ethics from a holistic perspective and confirming that individuals have inescapable moral responsibility for environmental protection.