The paper uses Matlab/GUI software to develop and design the electrical and magnetic vir‐tual demonstration experiment platform .It has completed 23 experiments of the static field ,the constant current and the circuit ,the constant magnetic field and the electromagnetic induction .It is proved that the platform can help students deepen the understanding of the principles and law s of electromagnetism and cultivate their abilities of autonomous learning , independent thinking and comprehensive application . Meanwhile ,by changing the parameters of the system ,it helps students understand the physical phenome‐na corresponding to different parameters and further study on the contents of electric and magnetic to pro‐mote their professional flexibility of application of physics knowledge .%运用Matlab／GUI软件开发设计了电学、磁学虚拟演示实验平台，完成了静电场、恒定电流与电路、恒定磁场和电磁感应等五部分内容的23个实验，并将其应用于电、磁学演示实验教学中。实践证明，该平台能使学生加深对电磁学的原理、规律的掌握，培养了学生的自主学习、独立思考和综合应用能力。同时，通过改变系统的相关参数，了解不同参数对应的物理现象，以便进一步对电、磁学内容深入地研究，促进学生在其专业领域中对物理学知识的灵活应用。
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