Abstract: In order to improve the teaching effect of electromagnetic theory and microwave technology courses, an innovative microwave experiment project including design, simulation, fabrication and measurement has been presented. The improved experiment device for measuring the dielectric material relative permittivity and loss tangent has been proposed based on resonant cavity perturbation theory and HFSS electromagnetic simulation software. The experiment scheme has been given. Practice shows that the experiment project with software simulation and actual measurement is vivid and easy to master, which meets the needs of teaching and research.