Based on the daily meteorological data of 35 meteorological observation stations during 1971-2020 in Dabie Mountains and DEM data, methods such as climatic statistical analysis, successive correction and trend surface interpolation are used, and the spatiotemporal distribution characteristics of the photosynthesis (Y_Q), photothermal (Y_T) and climatic potential productivity (Y_W) of tea, the contribution rate of climatic resources and their response to climate change are analyzed. The results show that Y_Q and Y_W of tea in Dabie Mountains show a decreasing trend, the rate of decline is 0.58 and 0.05 t·hm^-2 per 10 years, Y_T show an increasing trend, the rate of increase is 0.36 t·hm^-2 per 10 years. In spatial distribution, Y_Q increases with latitude, Y_T decreases with latitude and altitude, and Y_W decreases with latitude and increases with altitude. The contribution rates of solar radiation, temperature and precipitation to Y_W are 26%, 48% and 26%, respectively. The increase in temperature is offset by the decrease in solar radiation and precipitation, resulting in a general dynamic equilibrium trend. Under the background of climate change, the decreasing trend of Y_Q in the northern part of the Dabie Mountains is more obvious than that in the southern part. The increasing trend of Y_T in the southern part is more obvious than that in the northern part. The Y_W in the low-altitude area is increasing, and that in the high-altitude area is decreasing. The results of this study can provide the scientific basis for the tea industry in Dabie Mountains to make full use of climate resources, pursue advantages and avoid disadvantages efficiently, and optimize industrial layout rationally.