An algorithm for constrained flooding based on negative selection is proposed to improve delay of flooding and quality of operation when the network transmit the fault information.According to the network environment different demand between delay of flooding and quality of operation
cost function of flooding delay and operation losing are set
the optimizing objective function synthesizing two factors is also set
and negative selection algorithm is used to compute the area of constrained flooding.The experimental result shows that this algorithm can improve the capability of the network.