The climate change has become one of the hot topics and an issue of international concern, the vegetal response to climate change has also caused more and more concerns and discussions by the scientists. This study was conducted based on the high-resolution annual average temperature data with the historical (during 1960~2009) and the projected (during 2010~2099. Firstly, simulated by Global Circulation Model MIROC 3.2 medres emission scenario A2) high-resolution spatial mean annual temperatures, which were obtained by using downscaling algorithm. Firstly, by using temperature suitability model, the temperature suitability and spatial and temporal differences of Camellia oleifera during the periods of 1980~2009, 2010~2039, 2040~2069 and 2070~2099 in the subtropical area of China were calculated. The subtropical area for C. oleifera temperature suitability could be divided into four types, high suitability, suitability, low suitability and no suitability. The all suitable regions gradually moved from the south to north, the suitability areas would arrive the boundary of northeast subtropics in the period of 2010~2039 and the high suitability areas would arrive the boundary of north subtropics in the period of 2040~2069. While comparing with the period of 1980~2009, in the three projected periods,the areas of high suitability and no suitability were increasing, the suitability and low suitability were decreasing. Secondly, according to the analyses of the time series of temperature suitability, the mean temperature suitability of C. oleifera over the subtropics had an increasing trend. Finally, the analyses of the trend rate and variability of temperature suitability indicated that the suitability of southeast subtropics declined obviously and the suitability of northeast had higher increasing trend.