Objective: To assess the clinical impact of point-of-care ultrasound (POCUS) on the triage speed, diagnostic accuracy, and patient outcomes in blunt chest trauma (BCT). Methods: A retrospective observational study was conducted on 328 BCT patients admitted to our level 1 trauma center between January 2020 and December 2022. Patients were divided into the POCUS group (n=168) and the conventional assessment group (n=160) based on whether POCUS was performed during initial triage. The primary outcomes included time to definitive diagnosis, rate of unnecessary computed tomography (CT) scans, and 30-day mortality. Secondary outcomes covered length of hospital stay, ICU admission rate, and incidence of missed injuries. Results: The POCUS group had a significantly shorter time to definitive diagnosis (22.5 ± 8.6 min vs. 58.3 ± 14.2 min, P<0.001) and a lower rate of unnecessary chest CT scans (12.5% vs. 38.8%, P<0.001) compared with the conventional group. The 30-day mortality rate was 5.4% in the POCUS group and 10.6% in the conventional group (P<0.05). The incidence of missed injuries was 2.4% in the POCUS group, which was significantly lower than 8.8% in the conventional group (P<0.01). No statistically significant difference was observed in ICU admission rate between the two groups (P>0.05). Conclusion: The application of POCUS during initial triage of BCT patients can shorten diagnostic time, reduce unnecessary radiation exposure from CT scans, decrease missed injury rates, and improve short-term survival