ObjectiveTo study the relationship between physiologic ability and surgical stress score (E-PASS) and perioperative complications of radical hepatectomy in patients with primary liver cancer.Methods124 primary hepatocellular carcinoma patients admitted to our hospital from March 2022 to May 2023 were retrospectively selected as the study subjects, all of whom underwent radical hepatectomy in our hospital. The perioperative complications of these patients were statistically analyzed, and then they were divided into two groups based on the presence or absence of complications, namely the occurrence group (n= 29) and the non-occurrence group (n= 95). The clinical data and disease-related characteristics of the two groups of patients were compared and E-PASS evaluation was conducted. The multifactorial Logistic regression equation was taken to analyze the relationship between perioperative complications of radical hepatectomy and various indictors, and then ROC curve graphs were drawn to predict the value of E-PASS in evaluating perioperative complications of radical hepatectomy in patients with primary liver cancer.ResultsA total of 124 patients were included in this paper who underwent radical hepatectomy, and 29 patients (23.39%) had perioperative complications, including 2 cases of liver failure (1.61%), 6 cases of pleural effusion (4.84%), 4 cases of abdominal abscess (3.23%), 8 cases of postoperative hemorrhage (6.45%), and 9 cases of abdominal cavity infection (7.26%). In addition, patients with no complications were 95 cases (76.61%). The difference between the occurrence group and the non-occurrence group was significant in terms of age, intraoperative bleeding, preoperative total bilirubin, and preoperative albumin (P< 0.05). The preoperative risk score (PRS), surgical stress score (SSS), and composite risk score (CRS) scores were all higher in the occurrence group than those in the non-occurrence group (P< 0.05). After multifactorial logistic regression analysis, it was found that PRS, SSS, and CRS would all have a significant positive influence relationship on perioperative complications of radical hepatectomy in patients with primary hepatocellular carcinoma (P< 0.05). Meanwhile, by drawing ROC curves, it was found that E-PASS has certain value in predicting perioperative complications of radical liver resection with AUCs of 0.617, 0.614, and 0.601 respectively.ConclusionThe perioperative complications of primary hepatocellular carcinoma patients after radical hepatectomy are high, which need to be paid attention to. And the value of predicting perioperative complications by E-PASS is higher, which is worth being popularized in clinic use.