Keserol is mainly used to treat constipation and is a better medication to use. Keserol contains glycerin, magnesium sulfate and other hypertonic solutions, generally when the patient has severe constipation, it is necessary to squeeze the Keserol through the anus into the rectum, lubricate the intestinal wall, relax the anal sphincter, so that dry stools are rapidly discharged to relieve constipation. For patients who do not have bowel movement for a long time and do not have organic lesions or obstructive lesions, Keselol is generally better. But Keselu irritation is relatively strong, the use of Keselu for pregnant women will stimulate uterine contractions leading to miscarriage, and for children may cause damage to the local mucosa of the anus, resulting in intestinal mucosal bleeding or congestion, edema, general pregnant women, children should be careful to use Keselu.