Through the rational use of tending thinning technology,the density,variety type and structure of the forest area can be adjusted,leaving high-quality trees,and the space required for the growth of trees can be adjusted appropriately,so that a single tree can obtain sufficient nutrition to ensure the healthy growth.This paper briefly described the significance and technical points of tending thinning and its application in forest cultivation,to ensure the rationality and effectiveness of technology application and improve the level of forest cultivation.