Abstract:With the escalating of EAST and the continuous improvement of plasma discharge parameters, the obtained plasma current and energy storage also have been increased. Once such a high-energy plasma disrupts, the harm to the first wall of the experiment device is destructive. This article is to handle the abnormal events occurring during the plasma discharge, and proposes the algorithm which can control plasma current in the abnormal state of the slope down through the code. The abnormal plasma is controlled by the active feedback control method, and the current of the plasma can be sloping down. The effectiveness of this method has been verified by a simulation server with a circular plasma model.