The urban heat island effect has been the focus of urban research. The urban heat island effect caused by Urbanization has been deeply changed the urban climate of Quanzhou. It has obvious spatial and temporal characteristics.Its formation was related to many factors including the nature of urban surface and dominant wind direction and so on. Through analyzing and summarizing the phenomenon and regularity about the spatial and temporal variations of heat island in Quanzhou，we summarized the characteristics and causes of the heat island effect and with other meteorological factors mutual influence in Quanzhou，to make a number of measures to decrease the heat island effect.