The three-way meridian instrument is a physical therapy instrument, which acts on the human meridian system through electromagnetic waves, sound waves and heat energy, improves the circulation of qi and blood, promotes metabolism, relieves pain and inflammation, and enhances immunity. The three-way meridian instrument can be used for adjuvant treatment of various diseases, such as scapulohumeral periarthritis, lumbocrural pain, rheumatoid arthritis, epigastric pain, dysmenorrhea, hypertension, neurasthenia, nerve injury, soft tissue injury, hemiplegia recovery, etc.