In the paper, Based on systematically concluding the main research achievements on impacts of global climatic change on the agriculture in Northwest China. The main characteristics of modern climatic change in Northwest China are presented. Regularity of impacts of modern climatic change on soil moisture, surface evaporation and crop climatic productivity are expounded. Responses of the agricultural activities such as procreation, growth, insect pest, planting acreage and climatic yield etc. of nine sorts of crops include winter wheat, spring wheat, corn, potato, winter rapeseed, cotton, flax, forage, grape in Northwest China to global climatic change is generalized. It is found that impact of climatic change on the crops is not only of advantageous aspects but also of disadvantageous. And characteristics of the response to climatic change are very different with different crops. The research work is of scientific meaning for agricultural activities in Northwest China.