Propapatamol hydrochloride for injection is used for short-term treatment of moderate pain, especially pain after surgery, and also for short-term treatment of fever when clinical intravenous administration continues to treat pain or high fever, and other administration methods are not suitable. Usage and dosage: adults and children over 15 years of age should be given one to two grams of intravenous or intravenous drip, two to four times a day, at intervals of not less than four hours, and the daily dose should not exceed eight grams. For adults with weak constitution, each dose is one gram. Common adverse reactions are mainly local pain at the injection site, as well as mild allergic reactions such as dizziness and discomfort, erythema or urticaria, thrombocytopenia, leukopenia, anemia, hypotension, elevated transaminase and contact dermatitis, and reports of contact dermatitis and severe allergic reactions with medical staff. It is forbidden to use it in allergic patients, patients with severe liver function damage should insist on using it, patients with creatinine clearance rate less than 30ml per minute should be forbidden to use it, propacetamol hydrochloride for injection is strictly applicable to adolescents and adults over the age of 15, and it is not recommended for pregnant women and lactating women.