Experimental system of water tunnel of wear-cavitation was designed. In order to realize the data real-time collection and disposal, Visual C++6.0 was applied at the course of designing and constructing experimental system of abrasion and cavitation. The composing of system of flow parameters controlling and data real-time collection and disposal, the designing of software, applied result of experiment were introduced. The result indicated the system could realize flow parameter effectual controlling and data real-time collection and disposal.