Abstract: With the variable allometric rates model and the tree form pipe model for F. hodginsii plantation of 23 to 26 years of growth, the biomass of four plantations in Fujian Province was measured. The total stands biomass was 178. 240 t/ hm2 at maximum (No. 25 plot, site class Ⅱ, 2700 stem/hm2, 24 years old) and 155. 204 t/hm2 at minimum (No. 22, site class Ⅰ, 1216 stem/hm2, 26-years old). The productivity of the fomer was 7. 628 t/ (hm2·a) and the latter was 6. 075 t/(hm2. a). Components biomass was 108. 145. 16. 532. 17. 455. 7. 735 and 27. 732 t/hm2 for stem. barks、branches、leaves and roots, respectively for the former, while 88. 528、 12. 06、21. 618、8. 016and 24. 413 t/hm2 were for the latter, respectively. Weibull distribution of stands components biomass was positively skewed, at C<3. 6 (Since the distribution begins from a small diameter, biomass inclines toward the smaller diameter), but the greater the density stock, the smaller the diameter of distribution the more the density, the greater the diamerer of distribution stock. The logistic increment eguation of biomass cumulative process showed that their stage of maximum growth was at 15 to 18-years of age.