ln order to enrich the optical fiber communication experiment projeet , stimulate students’enthusi-asm and initiative for learning , and improve their comprehensive application abilities and scientifie literaey ,OptiSystem soltware has been introduced into the teaching of optical fiber communication experiments,Takingthe Erbium-Doped Fiber Amplifier( EDFA )experiment as an example, we have designed hasie validationexperiments , eomprehensive application experiments , and exploratory research experiments, and establishedsimulation models using OptiSystem software, Following a design apprach from simple to complex, theexperimental simulations allow students to more intuitively understand the amplifeationperormance of Erbium.Doped Fiber Amplifiers, their applications in optical fiber eommunication systems ,and the factors that affect thegain chamaeteristies of these ampliiers.