The invention discloses a SVC sliding mode control method based on integration adaptive backstepping; the control method comprises the following steps: building a SVC equipment single-machine infinite bus system dynamic mathematics model, designing a controller according to an integration adaptive backstepping method, firstly designing a state variable tracking error, adding an integration item into the error item, simultaneously considering system parameter nondeterminacy, building a Liapunov function, online adaptively processing the uncertain parameters, finally adding a Terminal slide mode surface, obtaining a SVC integration adaptive backstepping stable controller, and finishing SVC sliding mode control based on integration adaptive backstepping. The method uses the adaptive integration method to eliminate errors, adds the Terminal slide mode control, so the system has stronger robustness on interference and system perturbation; the method can fast damp power concussions, can keep the machine end voltage, and can improve the power system transient stability.