Covid-19, which erupted in Wuhan, China, in 2019, was highly contagious and caused panic. covid-19 has a sequelae, and the World Health Organization reports that about 10 to 20 percent of crown infections have new crown sequels, including exhaustion, overheart movement, shortness of breath, cognitive difficulties, chronic pain, sensory function, muscle weakness, etc. Research institutions such as the United States, the United Kingdom, the Netherlands and other research institutions have released a considerable number of new crown sequels in their own country, and some of the population is already unable to work. There are still no systematic treatment, only some of the symptoms proposed based on the symptoms, these traditional therapies do not treat the sequelae, so some new therapies have been proposed. This paper will revolve around cell therapy. The common methods used in clinical treatment of diseases are surgery, chemical drugs, ion exposure, plant drugs. The development of modern medical theory and technology gradually introduced cell therapy into the clinic. Cell therapy is a treatment with functional cells as the main body. Cell therapy can be used as an independent treatment or combined with the above-mentioned routine treatment. In recent years, cell therapy has shown increasing application value in the treatment of genetic diseases, cancer, tissue injury, diabetes and other diseases, and details current cell therapy and prospects.