Abstract: Seeds of Ormosia hosiei were collected in November of 2013 in Yunhe of Zhejiang province. Container seedling cultivation was carriedout in April of the next year. Determinations were implemented in May of 2016 on height, ground diameter, biomass and moisture content in differentorgans of seedlings with different height classification. The results showed that biomass of individual plant and different organs had positive relationwith height growth of seedlings. Biomass in different organs was ordered by leaf＞root＞stem＞branch. It had close relation between seedling heightand ground diameter, as well as between height and ground diameter with biomass in different organs, aboveground, underground and individualplant. Moisture content in root, stem, leaf and individual seedlings had the highest at 40-45cm, especially in branch, 67.04%. While moisture contentin root, stem, leaf and individual seedlings was the lowest, but that in branch was the highest, 68.97%. Moisture content in root, stem and individualseedling had significant negative relationship with biomass in different organs. Leaf moisture content had evident negative correlation with biomassin root and stem, but great negative correlation with biomass in leaf and individual seedling.