Abstract: Taking Taojiang County as an example, this paper estimates the dry matter loss of bamboo forest after thinning bamboo shoots with different frequencies by taking 1～3 times of final thinning bamboo shoots for pre selected bamboo shoot forest, and investigates the shape, yield, growth status of new mother bamboo and labor input cost after thinning bamboo shoots. The results show that the DBH of new bamboo shoots decreases and the mother bamboo grows well after thinning bamboo shoots, The yield and unit weight of bamboo shoots increased in the following year. The last bamboo shoot thinning operation for bamboo shoot forest is carried out before and after May 15 every year, with the least labor cost and the least dry matter loss of bamboo forest.