Edema occurs when there is a local infection, thrombosis, or mixed hemorrhoid impaction. If the hemorrhoid is locally thrombosed, most clinical treatments are surgical, either thrombectomy or thrombosed external hemorrhoid removal. Conservative treatment can be oral diosmin tablets or abortifacient tablets and topical Ma Yinglong hemorrhoid cream with warm water or warm salt water sitz bath. If it is an inflammatory external hemorrhoid caused by infection, you can use topical Bactrim ointment and take oral levofloxacin or metronidazole tablets. If it is a mixed hemorrhoid embedded, you can take Diosmin tablets orally and use Ma Yinglong hemorrhoid cream or Tai Ning suppository topically to plug the anus, with warm water or potassium permanganate solution sitz bath to control the symptoms before surgery. The local edema can use magnesium sulfate for wet compresses, magnesium sulfate is a hypertonic solution, has a very good effect on swelling.