Abstract: Objective To explore the four diagnostic information of Traditional Chinese Medicine and the distribution profile of syndrome types of common COVID-19 patients with positive nucleic acid retest after discharge in Xiaogan area, so as to provide basis for collecting experience and formulating scientific and efficient treatment regimen. Methods The clinical data of 52 cases of common COVID-19 patients with positive nucleic acid re-examination after discharge were collected from the First People's Hospital of Xiaogan City, Hubei Province with the basic information of patients, under lying diseases, four diagnosis information of Traditional Chinese Medicine and the distribution of syndrome types of Traditional Chinese Medicine. Results There were 22 cases (42.31%) showed abnormal clinical manifestations in 52 cases of common COVID-19 positive nucleic acid recheck after discharge, including 17 cases of cough (32.69%), followed by constipation, chest tightness, diarrhea, poor appetite, weakness, shortness of breath and other symptoms. The tongue was mainly dark red (50.00%), followed by light red and red. The tongue coating was mainly yellow greasy (53.85%), followed by white greasy, thin white, thin yellow and less coating. Clinical syndrome types were classified as 24 cases (46.15%) of dampness toxin stagnation lung syndrome, followed by cold dampness obstruction lung syndrome, lung spleen Qi deficiency syndrome and Qi Yin deficiency syndrome. Conclusions The syndrome differentiation of common COVID-19 patients with positive nucleic acid re-examination after discharge is mainly damp toxin stagnation of lung syndrome. The main pathogenic factors are damp and toxin, so the treatment should focus on dispelling dampness.

Key words: COVID-19, Traditional Chinese Medicine syndrome type, pathogenesis