The Department of Radiation Oncology at Ruijin Hospital was established in 1992 and is one of the earliest institutions in Shanghai to carry out radiotherapy. Over the 26 years since its establishment, the department has implemented the concept of comprehensive treatment in tumor therapy and followed international standardized treatment criteria. In recent years, the department has developed rapidly. While continuously introducing talent, the department has also constantly updated advanced radiotherapy equipment. Currently, the department possesses one 16-slice large-bore CT, one simulator, one ELEKTA linear accelerator (Synergy), one VARIAN high-end accelerator (EDGE), one gynecological three-dimensional brachytherapy device, and one VARIAN linear accelerator (Trilogy) at the Proton Center. At present, the department can carry out volumetric modulated arc therapy (VMAT), image-guided radiotherapy (IGRT), intensity-modulated radiotherapy (IMRT), stereotactic body radiotherapy (SBRT), precise three-dimensional conformal radiotherapy (3D-CRT), brachytherapy, and, in combination with our hospital's PET-CT and PET-MR precise functional localization, achieve internationally leading levels of precision radiotherapy. It can treat various malignant tumors of the head and neck, chest, abdomen and pelvis, lymphatic system, genitourinary system, as well as metastatic or recurrent malignancies. Moreover, the department's subspecialty level is outstanding, with experts conducting long-term in-depth research on different tumors, demonstrating superb treatment standards and rich experience. 　　The current discipline leader is Director Chen Jiayi, who holds a doctoral degree and is a doctoral supervisor in oncology. She graduated in 1993 from the English-language program of clinical medicine in the Department of Medicine at Shanghai Medical University. From 1998 to 2000, she studied at Henri-Mondor Hospital affiliated with Paris XII University and the Gustave Roussy Cancer Institute in France. She has long been dedicated to the field of radiotherapy and comprehensive treatment of breast cancer and has profound attainments in the field of proton and heavy ion therapy. As first author or corresponding author, she has published 47 papers in SCI journals, domestic authoritative and core journals, including 13 full-text SCI original articles and 4 accepted for publication. She also holds multiple National Natural Science Foundation projects and major science and technology special research projects. As of 2018, the department had a total of 16 physicians, including 7 with senior professional titles, 5 with intermediate professional titles, and 4 resident physicians. This includes two doctoral supervisors and one master's supervisor. Those with doctoral and master's degrees each account for 50%, and 7 have overseas study experience; one full-time research personnel (Shanghai Thousand Talents Plan) with a doctoral degree; 11 radiotherapy medical physicists, including 7 with master's degrees, 1 with a doctoral degree, and 1 with overseas study experience; 20 radiotherapy technologists, 1 maintenance engineer, and 1 network engineer, among whom 5 have bachelor's degrees or above and 2 have overseas study experience; 2 specialist nurses, one of whom has a bachelor's degree. In addition, there are 6 doctoral students currently enrolled. Among the above professionals, two have received funding from the Shanghai Young Physician Training Program and hospital-level talent programs, and one has received a university-level talent program.