Abstract: The paper aims to study the correlation between resin yield and tree factors of Pinus massoniana, analyzed the relationships between resin yield and DBH, crown height, crown width, canopy outline by Bivariate and Partial correlation analysis. The results showed that: the resin yield of P. massoniana was positively correlated with DBH, crown height, crown width, canopy outline by bivariate correlation analysis, of which the correlation coefficient was crown height (0.782)>crown outline (0.780)> canopy width(0.743)>DBH (0.440); the significant negative correlation between resin yield of P. massoniana and DBH (R=-0.183, P<0.05) was detected by partial correlation analysis, in contrast, significant positive correlation between resin yield and canopy outline (R=0.727, P<0.01), crown height (R=0.721, P<0.01), crown width (R=0.681, P<0.01) was detected; the multiple linear regression equation obtained to estimate resin yield of P. massoniana was: Y=-0.046x胸径+0.514x冠幅+0.569x冠长-2.830, while R2 was 0.639 for the goodness of fit. All the results suggested that the correlation between resin yield and tree factors of P. massoniana could be reflected more really by partial correlation analysis, for that the interference factor had been excluded, the effect of tree factors on resin yield of P. massoniana was ranked as: canopy outline>crown height>crown width>DBH, of which the DBH affected resin yield of P. massoniana negatively.