Metronidazole Sodium Chloride Injection on the face has a certain antibacterial and anti-inflammatory effect, but it does not achieve the purpose of removing acne. Metronidazole sodium chloride injection is mainly used clinically for the treatment of anaerobic bacterial infections, the main route of administration for intravenous injection. If you use metronidazole sodium chloride injection on your face, you need to pay attention to the ingredients in the drug, such as metronidazole, pyrrole drugs have allergies, skin allergies, and those suffering from liver disease are prohibited. After opening a bottle of solution try to avoid contamination, it is recommended to refrigerate and generally after 2-3 days of use it is recommended to discard the remaining solution, because the efficacy of the drug will be affected if the solution is in contact with the air for too long. After the face is cleaned, metronidazole sodium chloride injection can be used as a wet compress for 5-10 minutes, after the end of which there is no need to clean the face again and the facial skin inflammation can be relieved to some extent. If allergic symptoms such as skin redness, pain and discomfort occur after use, it is recommended to seek medical attention promptly to avoid aggravation. Facial acne usually refers to acne. You can help improve the acne situation by ensuring a light diet, reducing the intake of sweets, fried foods, and spicy and stimulating foods; ensuring regular rest, adequate sleep, and proper physical exercise to improve the endocrine function of the body; developing good hygiene habits, and using skin care products that are suitable for you. If facial acne is more serious, symptoms can be relieved through medication under the guidance of a professional doctor. Commonly used local topical medications include ketocinone gel, retinoic acid cream, isotretinoin gel, adapalene gel, etc.; oral medications include retinoic acid tablets, vitamin capsules, doxycycline, etc. Patients are not recommended to use their own medications for treatment.