Abstract: Objective Exploring the effect of functional residual liver volume and spleen volume ratio（FreLSVR）on postoperative liver dysfunction and liver function recovery in patients.
Methods A total of 78 patients with primary hepatocellular carcinoma who underwent liver resection from June 2016 to August 2018 were enrolled.The liver CT data were retrospectively analyzed.The residual liver volume and spleen volume were calculated after three-dimensional reconstruction and the relationship between functions.
Results FreLSVR is associated with liver function in patients.The greater the FreLSVR，the better the postoperative liver function，and the median time of hospitalization in FreLSVR>1.0 is 15 days（8～22 days），while the median hospitalization time of FreLSVR≤1.0 was 21 days（13～36 days），and the difference in hospital stay was statistically significant（P<0.05）.
Conclusion Functional residual liver volume to spleen volume ratio（FreLSVR）can reflect the recovery of postoperative liver function.

Key words:  liver cirrhosis, primary liver cancer, liver function test, volume ratio of spleen to liver remnant, three-dimensional reconstruction