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Climate warming is a serious environmental problem faced by human being. It affects the living condition and the sustainable development of the society, and has caused worldwide attention. Through collecting and analyzing the latest scientific results across the world, the impact of climate warming on nonpathogenic diseases is studied. The results indicate that climate warming help patho genic diseases spread, make some new virus activated, increase malaria and other diseases of the like, and enhance the harmfulness of SARS and birds flu. Some countermeasures are put forward according to China’s actual situation.