To avoid serious influence caused by wind turbine suddenly loss connection from the power system when power grid disturbance or fault happened, a kind of control method using the super capacitor to improve the fault ride through (FRT) of wind turbine is proposed. Based on the analysis of Super Capacitor (SC), Doubly fed induction Generator (DFIG), and converter models, the FRT system controller model Based on SC is built. Multi-machine parallel connection SC system is simulated. Simulation results show rotor current is reduced and bus voltage is increased for installation SC, thus FRT ability of DFIG is improved.