The length of the course of vancomycin depends on the disease being treated and is generally 7-10 days. Vancomycin is a narrow-spectrum glycopeptide antibacterial drug with powerful bactericidal effect on Gram-positive bacteria, mainly used for serious infections caused by pathogenic bacteria such as methicillin-resistant Staphylococcus aureus and Pneumococcus, but not effective against Gram-negative bacteria. For sensitive pathogenic bacteria, significant efficacy is generally obtained with intravenous administration for 3-5 days. Vancomycin should not be administered intramuscularly, the rate of intravenous drip should not be too fast, and the duration of each drip should be controlled for more than 1 hour. Side effects such as chills, nausea, and rash should be discontinued promptly. Long-term or high-dose use of vancomycin may lead to hearing loss and renal insufficiency, and may also lead to dysbiosis and secondary secondary infection, and the drug should be discontinued or changed in time after the condition improves.