With the increase of the penetration rate of wind power in the grid, the influence of wind power grid-connected on the frequency of power systems is increasingly significant. Conventional wind turbines cannot maintain the same frequency as the synchronous machine because of their rotor speed, which causes the mechanical inertia of the wind turbines to not participate in the grid frequency adjustment. In this paper, an exponential function-based virtual inertia adaptive control strategy for double fed induction generator(DFIG) is proposed. According to the frequency variation of inertial response, the virtual inertia adaptive parameters are adjusted to quickly suppress the frequency oscillation and provide inertia support. Finally, the simulation model is built in SIMULINK, which verifies the effectiveness of the proposed method.