Complications of perianal burns by 84 antiseptic solution include infection, anal incontinence, and increased fistulae. 1. Infection: perianal burned by 84 can lead to infection, severe anal pain, pus oozing, irritation of the local skin and aggravation of anal itching. With the passage of time, the body will become weak, reduce the ability to resist diseases, etc. 2. Anal incontinence: after perianal burns, the sphincter muscle will be damaged, and in severe cases, complications such as anal incontinence will occur. 3. Fistula increase: pus oozing out of the burn will penetrate the wall of the tube and spread along the sphincter interspace, forming a complex, multiple anal injuries, which may produce rectovaginal fistula, urethral fistula, bladder fistula and so on. Perianal burns by 84 antiseptic solution may be in addition to the complications mentioned above, due to different personal constitution, there will be other symptoms, it is recommended that patients seek medical attention in a timely manner, follow the doctor’s instructions as soon as possible and actively treat the patient, which will help to improve the prognosis.