In this paper, the distribution and ecoiogical characteristics of Korean Pine is analyzed and a W──T model is built based on the effects of environmental factors on tree growth and necessary presumptions, the influence of various climate changes on the growth and distribution, and the annual growth of Korean Pine under different climatic conditions, The results show that the suitable area and the growth of Korean Pine will greatly decrease in response to the temperature rising no mater how the precipjitation changes(increse or decrease).In perceptible ranges of climate changes, Korean pine would not recede from the northeast China.