Abstract: Sleep is a basic need for human life-sustaining activities, and sleep quality is closely related to human health. With the rapid changes in the global climate, an increasing number of studies have found that climate change has an important impact on sleep quality of human beings, and this impact is a complex process involving multiple interacting factors. Climate factors affect human physiology and the comfort of the sleep environment, which then affects the sleep quality of individuals. This article reviews domestic and international studies on the effects of climate factors such as temperature, humidity, air pressure, oxygen content and light on sleep quality, and analyse the mechanism of climate change on sleep quality, with the purpose of providing reference for the clinical treatment of sleep disorders.