Abstract: According to the requirements of undergraduate course as well as research needs,a set of experimental instrument for building water supply and drainage engineering was intuitionally developed to integrate the functions of hydraulic demonstration,test and research with flexible operation.The model instrument was designed,constructed and installed to function identically with practical engineering,simulating the various real scenarios of building water supply and drainage via automatic control device,along hydraulic parameters recorded.It supplied dynamic,3-dimensional observation,which can be applied in laboratory course and practices for building water supply and drainage engineering,as well as in experimental platform for the related theoretical research.