Abstract: With the multi precipitation, and the seasonal variability of growth represented by NDVI is well correlated with the seasonal temperature variation. (2) The exponential ‘e' relationship exists between NDVI and temperature. When the temperature is lower than some threshold value, the change of NDVI is not evident. When the temperature is above the value, the NDV I increases greatly with a rategreater than the increasing rate of temperature. In the meantime, the NDVI and precipitation have a power exponent relationship. This probably is ref lected by the follow ing facts. When the precipitation does not exceed some threshold value, the NDVI increases along with the increase of precipitation; but when the precipitation reaches or exceeds the threshold value, the precipitation no longeractsas the controlling f actor of vegetation increase. (3) The seasonal growth of vegetation in China responds to the temperature synchronically, but lags a 20-day behind the precipitation on the average.