Difficulty in urinating is one of the common complications after hemorrhoid surgery, and it occurs because the anus and the urethra in front of it belong to the same innervation. If there is pain from surgery in the anal area, it will involve the urethral sphincter muscle in front of it to be tense, and then produce difficulty in urination. The most effective method is direct manual catheterization, this method is more painful, but it is more effective, will be left in the bladder to excrete all the urine, not as a last resort, will not use manual catheterization method. If it is not particularly difficult to urinate, you can use a hot towel to apply wet compresses to the bladder, which can relieve the tension of the urethral sphincter, and then slowly discharge the urine. You can also listen to the sound of running water to induce a bowel movement, which is also one of the commonly used methods. If these do not work well, the patient can be manually catheterized.