This paper analyzed the mechanical characteristics and dynamic stability of the finite element muscle model with activation behavior in order to better apply it in the simulation of head-neck dynamic response. A coupling constitutive material combining quasi-linear viscoelastic element and Hill type element，representing the passive behavior and active behavior respectively, was applied to the rabbit tibialis anterior FE model. The model was validated with eccentric contractions tests under different strain rates published by Myers. The mechanical characteristics of the muscle were also analyzed under isometric contractions and axial compressions. The results have shown that the strain-stress characteristics are consistent with the reference tests and the maximum stress differences are less than 0.07MPa under the same strain condition. This constitutive model has a good stability and biofidelity that can fulfill the requirement of neck muscle system modeling for biomechanical study.