We used the dendrochronology method to investigate the radial growth of Pinus koraiensis response to climate change in the poplar-birch Korean pine forest and linden-Korean pine forest on the northern slope of Changbai Mountain, Northeastern China. The result indicated that the radial growth of Pinus koraiensis was sensitive to precipitation and Pinus koraiensis growing in two forest types responded to climate differently. Response function showed that monthly total precipitation in current July and previous September significantly positively affected tree growth of Pinus koraiensis in both forest types. In linden-Korean pine forest, ring width was also significantly negatively correlated with precipitation in the previous July and was significantly positively correlated with mean temperature of current March and Spring. Ring width in poplar-birch Korean pine forest did not show any significant correlation with mean temperature. Point year analysis confirms the result of response function analysis, indicating that precipitation in the current growing season and the end of previous growing season positively affected the radial growth of Pinus koraiensis, and temperature increasing in Spring positively affected radial growth of Pinus koraiensis.