In recent years,with the updating of radiation treatment equipment,more and more advanced and accurate equipments are used in clinics,improving the accuracy of the radiation treatment.But there is no improvement in diagnosis and treatment process,work efficiency and equipment application area of no improvement.The use of Siemens CTVision radiation treatment system can not only improve the accuracy radiation treatment,but also simplify the work process,shorten the diagnosis and treatment time and broaden the range of application equipment.With the high efficiency,more medical projects can be carried out.Hardware and software function of Siemens CTVision radiation treatment system are introduced in this review,with clinical application and medical projects developed on the basis of the system.Analysis of the new radiation treatment work patterns are carried out and the importance of the changes of decentralized polymorphism mode into the integration polymorphism mode in tumor radiation therapy are discussed in this article.