Heavy ion therapy has the advantages of high precision and relatively few side effects, but also has the disadvantage of high price. 1. Advantages: heavy ion radiation penetrates into the body to a certain depth will stop, through the precise radiotherapy design, can make the ray just stay to the lesion, with high precision, small irradiation range, low toxic side effects of radiotherapy, etc., to achieve therapeutic effect at the same time to minimize the damage to normal tissues. 2. Disadvantages: heavy ion therapy is expensive, the cost can reach several times or even dozens of times of other radiotherapy, and the enhancement of the efficacy of malignant tumors is relatively limited, the efficacy is not significantly stronger than the mainstream radiotherapy. It is recommended that patients go to regular hospitals and choose standardized treatment under the guidance of doctors.