According to the design of feed-water system process and arrangement of one nuclear power plant project of CPR1000, a universal model from deaerator outlet to steam generator inlet is built for steady and transient analysis with the result of piping resistance calculation by using Flowmaster computer package. The transient analysis indicates that the decrement of steam generator feed-water is allowable during the process of tripping one pump and starting-up the standby pump. The standard model and analysis are demonstrated with a certainty commonality.