Using the localization of electron cyclotron resonance heating, the profile of plasma current is improved so that the conditions of stabilities of tearing modes are also improved. As long as the absorbed region of electron cyclotron resonance heating covers the resonance layer of tearing modes, the effect of stabilizinl is very good. It is not necessary to require that electron cyclotron resonance surface must coincide with that of tearing mode strictly. In the period of electron cyclotron heating, the tearing mode is suppressed effectively.