Fire boils, also called boils, are suppurating carbuncles. It is not always possible to apply cactus to a fire boil, but it is useful, and the exact effect varies from person to person. Cactus has a sweet taste and cool nature, and is effective in clearing heat and removing toxins (removing heat and toxicity from the body), and subduing swellings and dissipating knots. When used externally, it can treat sores and swellings. It is also useful in relieving pus and pain caused by boils. In addition, cactus can be used externally not only for sores and ulcers, but also for the treatment of minor burns. Secondly, cactus internal use can be used for lung heat cough, fever and other diseases. It should be noted that, although the cactus has a certain effect of healing, but the nature of the cold, its juice into the eyes, make people sleepless. Cold people should not be used. And the specific use and dosage need to be determined by a professional doctor in accordance with the condition, not blindly used on their own, so as not to cause bodily harm.