Mainly use the lower frequency band of electromagnetic waves for medical treatment. The low-frequency therapeutic instrument is suitable for the treatment and relief of symptoms of essential hypertension, neurasthenia, gastroenteritis, scapulohumeral periarthritis, cervical spondylosis and rheumatoid arthritis, and can regulate human immunity, endocrine and nervous system, dredge meridians and improve microcirculation. Its working principle is to apply physical factors to the meridians and acupoints of various parts of the human body for physical therapy, thus improving the clinical efficacy.