Lancet paper in which a total of 269 patients from 47 studies were included in the meta-analysis. The mean age of operative patients with COVID-19 was 50.91 years. Overall mortality of 6% with all deceased patients having postoperative complications associated with operation or COVID-19, including respiratory failure, acute respiratory distress syndrome (ARDS). Patients who presented any or more of the symptoms of respiratory failure, ARDS, short of breath and dyspnea after operation were associated with significantly higher mortality (r = 0.891, p < 0.001), while patients whose symptoms were presented as fever, cough, fatigue or myalgia only demonstrated marginally significant association with postoperative mortality (r = 0.675, p = 0.023). Twenty studies reported the information of medical staff infection, and a total of 38 medical staff were infected, and medical staff who used biosafety level 3 (BSL-3) protective equipment did not get infected.