Objective To analyze the effect of intensive training of Critical Bedside Visual Image Technologies (TBVT) for critical care refresher physicians. Methods A controlled trial method was used. From January 2020 to May 2023, all refresher physicians in the department of Critical Care Medicine of Peking Union Medical College Hospital were studied. Among them, 54 refresher physicians between October 2021 and May 2023 were selected as experiment group and adopted TBVT for teaching, while the other 66 refresher physicians from January 2020 to September 2021 were selected as the control group, using traditional teaching methods. The effect was evaluated through the bedside imaging technology assessment results and the number of physicians qualified for independent duty by the two groups of refresher physicians. T-test, Mann-Whitney U test and chi-square test were used for data analysis. Results The qualification rates of pulmonary ultrasound, cardiac ultrasound, electrical impedance tomography, and sidestream dark-field technology in the study group were higher than those in the control group [100.0%(54/54) vs. 77.3%(51/66), 100.0%(54/54) vs. 71.2%(47/66), 98.1%(53/54) vs. 51.5%(34/66), 18.5%(10/54) vs. 3.0%(2/66)], and the differences were statistically significant (all P<0.05). The proportion of physicians in the study group qualified for independent duty was higher than that of the control group [25.9%(14/54) vs. 6.1%(4/66)], and the difference was statistically significant (P=0.004). Conclusions The TBVT can help critical care refresher physicians better master bedside visual image techniques and improve clinical abilities.