Abstract: With the increase of knowledge and the improvement of diagnostic techniques nowadays,the morbidity of pulmonary thromboembolism (PTE) is obviously on the rise.Moreover,a growing number of people are concerned about PTE prognosis,which shows great differences.It can be asymptomatic in less severe cases,but it may be recurrent after cure.In severe cases,it can develop into chronic thromboembolic pulmonary hypertension (CTEPH),or even death,with high case fatality rate.So promptly recognizing the risk factors of prognosis is of great significance in improving the prognosis of patients with PTE.Through retrieving literature from PubMed,CNKI and so on,this review focused on the factors affecting prognosis of PTE.Various factors affect the prognosis of PTE.The prognosis of PTE is closely relevant to PESI scoring system,PTE risk stratification,treatment options and complications of treatment.And it also has inevitable connection with serum markers such as BNP or NT-proBNP,troponin and D-dimer.PESI scoring system is the most widely and effectively used indicator to evaluate the prognosis of PTE,among which elder patients and patients with malignant tumor have more incidence rate of adverse events.So advanced age and malignant tumor may be independent risk factors which affect the prognosis of PTE.Clinically for those PTE patients with prognostic risk factors,we should be on high alert,adopt individualized treatment,and strengthen the standardized management of patients,thus improving the prognosis and increasing the survival rate.