The network-based traveling wave fault location system determining the fault point by fusing the wave arrival times recorded by all fault location devices in power grid can improve the reliability and precision of fault location effectively. The fault network-based traveling wave fault location software， including fault calculation unit， database management unit， GPRS wireless communication unit and fault information publication unit， is therefore designed. The fault calculation unit calculates the fault point according to the network-based algorithm. The GPRS wireless communication unit achieves the communication between fault location devices and fault calculation center. The database is constructed with SQL Server 2000 to store and query the grid fault data and fault location result simply. The fault information publication unit is based on Browser/Server mode. The software has been applied in a real power grid fault location system， and the practical operations show that the software is with high reliability.