Abstract: Tung-oil tree is one of the important industry oil trees. This article makes a study on the influences of the stand density: on the stand structure of tung-oil trees and the output, in the different conditions of the main tung-oil tree production areas, and on the relation between the density and the stand production quota and the output quota, and on the main elements influencing the stand output. Based on the different stand conditions, the best planting density can be determined by the article and a model of the ideal stand structure of tung-oil trees is developed as well.