This study aimed to identify independent risk factors for acute hospital-acquired symptomatic pulmonary embolism (HA-SPE) by comparing the clinical data of HA-SPE and acute nonhospital-acquired symptomatic pulmonary embolism (NHA-SPE). A total of 292 patients were included in the analysis and divided into two groups: 191 patients had acute NHA-SPE, and 101 patients had acute HA-SPE. The average age of these 292 patients was 63.2 years, and the sample included 145 males. The K-M curve showed that the hazard ratio (HR) of the HA group to the NHA group in all-cause mortality was 3.807 (95% CI, [1.987,7.295], P = 0.0061). Multivariate analysis showed that malignant tumour (OR, 3.811; 95% CI [1.914-7.586], P=.000), recent surgery (OR, 7.310; 95% CI 3.392-15.755], P=.000), previous VTE (OR, 5.973; 95% CI 2.194 16.262], P =. 000), and the length of stay (LOS) (OR, 1.075; 95% CI [1.040-1.111], P=.000) were independent risk factors for acute HA-AEP (Table 2). The c-statistic for this model was 0.758 (95% CI, [0.698-0.800], P<.0001). Strengthening the prevention and control of patients with these risk factors may reduce the incidence of acute HA-SPE.