The principles of my treatment are: first, to ensure the efficacy, second, to minimize the side effects, and third, to spend as little money as possible. Figure 1: Post-operative radiotherapy for brain tumor, the tumor bed is located in the frontal lobe on one side, with two shooting fields plus two wedge-shaped plates, and the dose distribution meets the requirements. The cost of radiotherapy was less than 10,000 yuan. Figure 2: Post-operative radiotherapy for brain tumor, the tumor bed is located on one side, with two firing fields plus one wedge-shaped plate, and the dose distribution meets the requirements. The cost of radiotherapy was less than 10,000 yuan. Figure 3: Post-operative radiotherapy for brain tumor, the tumor bed is located in the cerebellum near the center of the skull, 3 fields plus 2 wedge-shaped plates are needed to achieve the required dose distribution. The cost of radiotherapy is about 15,000 RMB. Figure 4: Post-operative radiotherapy for brain tumor, the tumor bed is located on the side of the brain near the center, 5 fields are needed, and the dose distribution meets the requirements. The cost of radiotherapy is about 20,000 RMB. Figure 5. Huge brain tumor near the center, requiring intensity-modulated radiotherapy technique to protect the brainstem. The cost of radiotherapy is about 30,000 RMB. Figure 6: A huge brain tumor near the center, requiring intensity-modulated radiotherapy to protect more brain tissue. The cost of radiotherapy is about 30,000 RMB.