Aspirin has antipyretic, analgesic, anti-inflammatory effects, clinical applications for antipyretic and analgesic and anti-rheumatic, anti-inflammatory, anti-thrombotic, Kawasaki disease treatment. 1. Antipyretic and analgesic and anti-rheumatic, anti-inflammatory. Aspirin has strong antipyretic and analgesic effects, used for headache, toothache, muscle pain, dysmenorrhea, and cold and fever, etc. It can reduce the symptoms of redness, swelling, heat and pain caused by inflammation, and rapidly relieve the symptoms of rheumatoid arthritis. 2. Antithrombotic. Low concentration aspirin can affect platelet aggregation and anti-thrombosis, to achieve anticoagulant effect. Clinical use of small doses (50~100mg) of aspirin for the treatment of ischemic heart disease, cerebral ischemic disease, atrial fibrillation, artificial heart valves, arteriovenous fistulae or other post-surgical thrombosis. 3. Pediatrics for cutaneous mucocutaneous lymph node syndrome (Kawasaki disease). 4. Generally used for antipyretic and analgesic dose, rarely cause adverse reactions, long-term large amounts of drugs such as for the treatment of rheumatic fever is more likely to have adverse reactions, common nausea, vomiting, epigastric discomfort or pain and other gastrointestinal reactions, tinnitus, hearing loss, etc., but also may appear asthma, urticaria, angioedema or shock and other allergic reactions. 5. Aspirin is contraindicated in those who are allergic to the product, patients with severe heart failure, and those with active peptic bleeding ulcers. Pregnant and lactating women, children elderly must be strictly controlled dose. Attention needs to be under the guidance of a doctor to use the drug, not blindly use their own medication.