Objective To explore the application value of low-dose MSCT in shortterm review after lung cancer surgery. Methods 61 patients who returned to our hospital for reexamination within 30 days after the operation of lung cancer from April 2016 to August 2018 were selected. The image quality, image quality and radiation dose of the two scanning methods were compared. Results For conventional CT scan image quality score (3.52±0.30), low dose CT image quality score for (3.29-0.40) and conventional CT scan image quality score significantly higher than that of low dose CT image quality score, statistically significant difference (t=3.592, P< 0.05), the conventional CT scan images was 95.08%, low dose CT images was 93.44%, the conventional CT scan images and low dose CT was compared, there was no statistically significant difference (χ2 = 0.152, P=0.152). The radiation dose and CT dose index of conventional CT plain scan were mGy·cm and mGy·cm respectively (19.46±1.30) and (178.15±16.36), significantly higher than that of low-dose CT (10.36±1.26) and (99.94±16.12) mGy·cm, with statistically significant differences (P<0.001). Conclusion The quality of low-dose multi-slice spiral CT imaging is high, it can meet the requirements of short-term review after lung cancer surgery, and the ionizing radiation is small, which is worthy of clinical promotion.