Dimethicone oil emulsion can remove the vesicular mucus and clean the intestinal tract, the use of the drug before colonoscopy is usually mixed with water and taken orally, usually adults 2~4 ml mixed with 10 ml of water and taken after mixing well. Dimethylsilicone oil emulsion can remove the gastrointestinal tract vesicular mucus, so that the intestinal mucosa is fully exposed, commonly used in colonoscopy before intestinal cleansing preparation. Adults usually 2~4ml mixed with 10ml of water for oral administration. The dosage of the drug can be appropriately adjusted under the guidance of the doctor according to the specific age of the patient as well as the condition of the patient. Adverse reactions such as loose stools, abdominal pain, nausea and headache may occur with the use of the drug. It is contraindicated for those who are allergic to the drug. The drug is mixed well with water before taking it. There are no trials and no reliable references for pregnant and lactating women. If you need to use this drug, you should use it under the guidance of a doctor, do not use the drug blindly, so as not to affect the functioning of the drug improperly.