Abstract: In order to provide scientific guidance for cultivation of Polygonatum cyrtonema, effect of forest types and canopy density on the P. cyrtonema polysaccharide content was studied in the Yangxi Town of Sanming City, Fujian Province. Results showed that the root polysaccharide content of P. cyrtonema in different forest types ranked from high to low was moso bamboo forest (13.8%), broad-leaved forest (13.7%), Cunninghamia lanceolata forest (13.3% ) and Pinus massoniana forest (12.5% ). The root polysaccharide content of P. cyrtonema with different canopy densities ranked from high to low was 0.4-0.6 (13.8%), 0.2-0.4 (11.7%), 0.6-0.8 (11.2%) and 0.8-0.9 (9.8%). The root polysaccharide content of P. cyrtonema with different growth years ranked from high to low was 2 years (16.1% ), 1 year (15.5% ) and seedlings roots (11.4% ). Therefore, the suitable forest types to enhance polysaccharide contents of P. cyrtonema roots were moso bamboo forest or broad-leaved forest with canopy density of 0.4-0.6.