Virtual reality technology is a technology that creates a visual environment for people to experience through computer simulation, with features of immersion, interaction and imagination. This technology was used in engineering mechanics and urban planning in early times In medicine, diagnostics serves as a bridge for medical students to transit from basic medicine to clinical medicine. Using virtual reality technology to produce standardized patients (SPs) allows medical students to simulate the role of clinicians in the classroom, complete the diagnosis and treatment for virtual patients using various electronic media and the mastered theoretical knowledge of diagnostics, set up simulation training and online-and-offline teaching according to the diagnostic course standards which compensates the disadvantages in traditional medical teaching. Virtual reality technology has practical significances for cultivating medical students' clinical skills and thinking through procedural process evaluation, real-time feedback, etc.. This paper will discuss the prospect of virtual reality technology, its application as well as its advantages in diagnostic teaching.