The characteristics of China agricultural climate resources change during nearly 30 years are analyzed using the 536 ground meteorological site daily meteorological data ,combining with the feature of global warming in the 20th century and the main research time selection is the recent 30 years since the 80’s as the global warming intensified. Macro proposals are provided for reasonable utilization of agricultural climate resources, dealing with climate change, making the corresponding cultivation measures and cropping systems. The results show that: under the background of climate change, the heat resource in our country presents a significant rise over time, gradually reduce from the southeast to the northeast and northwest over space, the frost-free period gradually shortens from southeast to northwest; water resources in the northeast, most south and regional northwest show a trend of decrease over time, among which the precipitation from the southeast coast to the northwest inland gradually reduces, the reference crop evapotranspiration in south and northwest inland is higher, the moisture from the southeast to the northwest presents a trend from surplus to deficit; radiation resources show an increased trend from southwest to central, and increase in the northwest inland areas notably.