Objective To investigate the timeliness, economy, radiation dose and clinical value of mobile CT head scanning in intensive care patients.Methods Eighty ICU patients clinically suspected of progressive intracranial hemorrhage from September to December 2022 were retrospectively collected, including 40 patients in mobile CT group and 40 patients in conventional CT group. The absolute risk time, radiation dose and examination procedure of the two groups were recorded. The image quality of the bleeding area was evaluated by two senior radiologists, and the results were analyzed statistically. Results The mean absolute risk time of the mobile CT group was (9.21±2.13) min, significantly lower than that of the conventional CT group (47.43±7.10) min (Z=-30.542, P <0.05). The volumetric CT dose index (41.26±0.00) mGy·cm, dose-length product (660.16±0.00) mGy·mA-1·s-1 and effective radiation dose (1.52±0.00) mSv in mobile CT group were lower than those in conventional CT group (55.41±10.75) mGy·cm,(824.88±174.63) mGy·mA-1·s-1 and (1.90±0.40) mSv, with statistical significance (Z=-49.543, P<0.05). Z= -164.002，P<0.05; Z=-9.500，P<0.05). There was no significant difference in image quality of bleeding area between the two groups (Z=-0.028, P>0.05). The examination procedure of mobile CT group was reduced by 3 links and 3 medical staff compared with conventional CT group. Conclusion When intensive care patients undergo CT head scanning, mobile CT examination has higher timeliness, reduces risk, saves labor cost, reduces radiation dose, and can better serve patients in ICU who need to undergo head CT examination