The root cause of hemorrhoids getting bigger in a sitz bath is due to the increased abdominal pressure caused by the sitz bath, which causes the hemorrhoids to become oedematous, so they look bigger. Sitz bath due to the use of diluted potassium permanganate solution or warm water sitz bath, the temperature is too high or how long time, such as each sitz bath more than 20 minutes, may be due to the position of the intra-abdominal pressure increases, so that the hemorrhoids appeared to increase the phenomenon of edema. It is recommended that the sitz bath time is not too long, the water temperature is not too high. After the sitz bath, it is recommended to use local drying hemorrhoid ointment to smear or hemorrhoid suppository anal, usually pay attention to do not sit for a long time squatting, eat less greasy, spicy and stimulating food, keep the stool, avoid constipation, diarrhea occurs. If the sitz bath after the hemorrhoids still did not improve, it is recommended that patients consult the regular hospital anorectal department, follow the doctor’s instructions to give reasonable standardized treatment. Avoid delaying the condition.