OBJECTIVETo analyze the major effective factors under the climatic conditions of Guangxi which influence artemisinin content, in order to determine the best planting region.

METHODThe correlation, the gradually regression analysis with the statistical analysis system, the geography space analysis and the regionalization with GIS were used for the study.

RESULT AND CONCLUSIONThe temperature and the sunshine-hour were the major effective factors to artemisinin content, followed by the rainfall amount, the humidity showed less influence, and wind speed had no effect; And the climatic factors of seedling stage and the flowering season were the most influences to the artemisinin content. The artemisinin content was higher during the flowering season, in the region of temperature relatively lower and the rainfall amount smaller. The knoll and the mountainous region in northeast and southwest of Guangxi is the best suitable region for the Artemisia annua planting. The plain area in the southeast and middle of Guangxi is the not suitable region; Other areas are suitable regions for the A. annua planting.