Ultrashort wave is a current with a frequency of 30-300Hz and a wavelength of 0.1-1.0mm. Ultrashort wave is a way to treat diseases through short waves and is suitable for physiotherapy treatment of acute infections of soft tissues, joints, face and five senses. It can also be applied to the physical therapy and treatment of non-inflammatory infectious diseases, such as bone and fasciitis, rheumatic and rheumatoid arthritis and connective tissue diseases. Especially in the presence of surrounding soft tissue or surrounding necrotic tissue will accelerate the maturation and breakage of abscesses, and can still be applied under the surface of traumatic injuries that are broken or incised and drained, which can promote the shedding of necrotic tissue, the growth of granulation tissue, and accelerate the healing of wounds and incisions. When ultrashort wave is combined with antibiotics to treat acute suppurative inflammation, its therapeutic effect is more obvious than that of applying antibiotics alone.