Abstract: This paper is concerned with decentralized strong stabilization problem of linear time-invariant multi-channel systems. First, after generalizing the notion of blocking zeros to systems which are not necessarily controllable and observable, decentralized fixed blocking zeros with respect to each channel and with respect to the whole system are introduced. Then, under a weaker assumption than previous results, a necessary and sufficient condition for stabilization to occur with stable decentralized controllers, termed in such zeros, is proved. The constructive proof also provide also provide a procedure for synthesizing such controllers.