Abstract: When an EWS overloads, CPU is almost completely used to process NIC interruption. Thus, the high-level application program can not be executed, with a receiving livelock occurring in EWS. For such a case, an analysis is made for the receiving process of an EWS, and the receive-packet process can be viewed as two parts, i.e., the NIC interrupting process and TCP/IP process. According to the theory of 2-level serial queuing network system, an improved method is proposed by means of establishing a model of receive-packet process and analyzing in detail. It means that the NIC interruption will be ended temporarily to reduce the packet arrival rate so as to resolve the problem of receiving livelock by way of predicting the oncoming livelock in the system. The method has been verified through testings.