The symptoms of hemorrhoids getting bigger after soaking in hot water are mainly due to the high temperature of the hot water and the long soaking time, etc. First of all, when using hot water to clean the hemorrhoids, the temperature should not be too high and must not exceed forty degrees. If this temperature is exceeded, the hemorrhoids will be stimulated by excessive hot water, which will lead to increased edema and increased venous blood stasis around the anus, causing the hemorrhoids to become larger. Secondly, soaking in water for too long can also lead to increased pressure around the anus, slowing down blood circulation and aggravating the symptoms of hemorrhoids. The use of warm water sitz bath can be a good way to promote blood circulation around the anus and reduce hemorrhoids, sitz bath time is best not to exceed ten minutes and not more than twice a day, too long or too many times will aggravate the symptoms of hemorrhoids.