Hong Kong On Health information shows that Hong Kong's sixth generation of radio wave knife treatment of breast cancer can realize the whole process of respiratory tracking, with higher precision and fewer side effects. As the sixth generation of radio wave knife has a respiratory tracking system, it can continue with the patient's respiratory rhythm to the precise positioning of the lesion. According to the special structure of the tumor site, different tracking methods are selected, and under the guidance of the CT image, it is easy to achieve high-precision irradiation of the tumor, and the total error of the treatment precision is no more than 1.0mm, and it can play a role of protection for the normal tissues around the tumor lesion, which results in fewer side-effects.