Abstract: The aim of the article is to study the relation between the climate factors andthe distriubution of Ginseng (Panax QuinquefOlius Linn.) that was introduced inNorthern China. The method of the aim is principle component analysis (PCA).The variables are 12 climate and geographic values which come from 14 areasintroduced the Ginseng in Heilongiiang Province. They can be made up primarydata matrix of 14 ×12 so that classification and ordination can be done by PCA.The result shows that the distribution pattern of the Ginseng in the Province is anassemble situation which has 2 kinds of groups;that main ecological factors whichaffect the Pattern are thermal and hydraulic condition and its constitution;that the adequaCy climate value scope for introducing the Ginseng in the Province is aridgradient < 1;annual Precipitation > 460mm;warm index > 58℃ or 2300℃ < accumulation temperature ≤ 10℃.

Key words: Ginseng, Climate suitability, PCA