Semiconductor laser therapy instrument, mainly through the local irradiation of laser, penetrates deep into the tissue to promote the absorption of local inflammation and promote the repair of tissue. Clinically, it is mainly applied to the treatment of aseptic inflammation, such as muscle strain, aseptic inflammation of muscle or fascia and frozen shoulder, arthritis or periostitis, which can promote the absorption of local inflammatory factors through local irradiation and can relieve local pain. It can also promote local blood circulation and accelerate tissue repair for deep soft tissue injuries, such as ligament sprains, muscle strains, etc.