The use of disposable enema bags during colonoscopy mainly has the functions of cleaning the intestines, facilitating observation, and reducing the risk of infection, as follows: 1. Clean the intestines: There are usually substances such as feces in the intestines, which can affect the observation of intestinal mucosa by colonoscopy. Using disposable enema bags for enema can flush out feces, food residues, etc. in the intestine by injecting an appropriate amount of enema solution, such as physiological saline, polyethylene glycol electrolyte dispersion solution, etc., to achieve a clean state of the intestine, creating a clear view for colonoscopy examination, so that doctors can more accurately observe the condition of the intestinal mucosa and timely detect lesions such as polyps, ulcers, inflammation, tumors, etc. 2. Easy to operate: After enema, the intestine is in a relatively relaxed state, which helps the colonoscope to pass through the intestine smoothly, reduces the difficulty of colonoscopy advancement caused by factors such as fecal accumulation or intestinal spasms, reduces the pain of patients during the examination process and the risk of damage to the intestine caused by colonoscopy operation, and improves the success rate and safety of the examination. 3. Reduce the risk of infection: Disposable enema bags are individually packaged, sterile, and can be discarded immediately after use, effectively avoiding cross infection. Compared with repeatedly used enema equipment, it can reduce the possibility of bacterial, viral and other microbial infections caused by inadequate disinfection, ensuring the medical safety of patients. 4. Improve comfort: Using disposable enema bags for enema is relatively gentle and convenient compared to traditional enema methods, which can reduce discomfort for patients during the enema process to a certain extent. Moreover, after cleaning the intestines and undergoing colonoscopy, patients will not experience discomfort such as bloating due to the large amount of feces in the intestines, thereby improving their comfort throughout the entire examination process.