Compound Huangbai Liquid Coating can be injected inside the anus. Compound Huangbai Liquid Coating consists of Huangbai, honeysuckle, forsythia, centipede and dandelion, which is a proprietary Chinese medicine with the effects of subduing swellings and expelling rot, clearing heat and removing toxins (removing heat and toxicity and evil qi from the body), and it can be used for sores and ulcers after ulcers and wounds become infected with yang evidence. The drug can be soaked gauze strips applied externally to infected wounds, or broken abscesses. If the ulcer is deep, a sterile rubber tube with a diameter of 0.5-1.0cm can be inserted into the deep part of the ulcer, and the product can be extracted with a syringe for flushing. The adverse effects of Compound Phellodendron Bark Liquid Spread are not known at present. Note that this product can not be taken internally, but can only be used externally; pregnant women should be cautious; before using this product should be cleared lesions, change the medicine according to the routine; if allergic to this product is prohibited. If you need to use this product, it should be applied under the guidance of the physician’s diagnosis, do not self-medication, so as not to cause adverse consequences.