Abstract: Coronavirus disease 2019 (COVID-19) is a respiratory syndrome caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Once SARS-CoV-2 was detected in Wuhan (Hubei Province, China), it rapidly spread widely across China and the world, posing a serious threat to global health and the economy. With the development of Artificial Intelligence (AI) technology and the openness and application of open-source software, tremendous progress has been achieved in the quantitative study of chest radiology for COVID-19, enabling the quantitative dataization of radiological image data, which adds a powerful indicator to the prognosis study of COVID-19. Therefore, we reviewed the current literature on the factors predicting the severity and prognosis of COVID-19, and summarized demographic, laboratory and radiological factors to help with risk stratification and prognosis assessment for COVID-19 patients and assist in their clinical management and treatment.