In recent years, the incidence and mortality of tumors have shown an upward trend in the world, tumor has become the primary disease that endangers human health and leads to human death. The prevention and treatment of tumors has become a great challenge for medical workers. In the face of this severe situation, it is urgent to speed up the training of oncology professionals and provide more excellent specialists for the clinical diagnosis and treatment of tumors. Medical undergraduates are the backbone of clinical work in the future, so we should attach great importance to oncology in the teaching of medical undergraduates, perfect the teaching system of oncology, help students systematically learn the knowledge of oncology, cultivate students' clinical thinking of multi-disciplinary comprehensive diagnosis and treatment of tumors, and guide the future clinical practice and specialized work of medical students. However, there are still many problems to be solved in oncology teaching in China. This paper expounds the present situation of oncology teaching for undergraduates in medical colleges and universities in China, and probes into the possible effective reform methods in order to lay a foundation for the cultivation of oncology related talents and outstanding medical talents in oncology field, and to provide reference for promoting the development of oncology teaching.