MASEP New-SRRS Stereotactic Radiotherapy System is designed to treat various intracranial benign/malignant tumors and functional disorders groups of auto control valves are integrated into the source collimator system to randomly change the shape and dimension of the radiation field, thus achieving conformity and intensity modulation treatment. The system is auto-focus and auto-positioning. Its treatment planning system can avoid sensitive areas in the brain and provides both auto and manual planning. The planning system design makes the conformity more perfect to the contour of the tumor. The system is easy to use and safer for patients.