Abstract: To establish the mechanical modes of Larix gmelinii mature single annual ring(MSAR), including longitudinal modulus of elastic(MOE)and tensile failure load(LTF), classic Laminate theory was involved as the theoretical basic and MSAR was composition of earlywood(EW)and latewood(LW). Besides, in order to verify the both models, the mechanical properties of EW and LW were tested. The results showed that the relative errors of MOE model were concentrated fewer than 20%, while they were dispersed under 60% in LTF model. It concluded that it was possible to build Larix gmelinii MSAR mechanical models, of which base units were EW and LW. To improve the accuracy of LTF model, it was necessary to enhance test accuracy of specimen geometry. Moreover, to obtain more reliable mechanical properties of EW and LW mechanical parameters from MSAR, it requires further study on test methods for EW and LW.