water and normal feed were administered to the control group, and the corresponding weight of olive oil solution was administered intragastrically. In the 12th week, three control rats and three model rats were randomly selected. Following ethyl carbamate anesthesia, blood samples were collected from the inferior vena cava to measure ALT and AST levels, and hepatic tissues were stained with HE and Masson staining. Indexes of the control and model groups were compared to determine the successful establishment of the model. After the model was successfully constructed, the surviving rats were divided into the CCl4 group, CCl4+propranolol (10 mg/kg) (CCl4+PRO) group, CCl4+Biejiaxiaozheng pill (0.6 g/kg) (CCl4+BJXZ0.6) group, CCl4+Biejiaxiaozheng pill (1.2 g/kg) (CCl4+BJXZ1.2) group, and the control group (8 rats/group) for treatment. Method of drug administration: modest doses of drugs were weighted, and the suspension is prepared in a mortar. The concentration of propranolol was 5 mg/mL, and Biejiaxiaozheng pills were 0.24 g/mL, respectively. Each group was intragastric administration one time every day. 2.3. Detection of Rat Body Weight A 1 L beaker was placed on the electronic balance. After taring, the beaker was removed and the rat was placed in the beaker before the beaker was placed on the balance. The reading was obtained after the rats had calmed down. 2.4. Detection of Hepatic Function Markers Following ethyl carbamate anesthesia, the abdomen was opened and blood was collected from the inferior vena cava using heparin as an anticoagulant. Then, the blood sample was analyzed according to the instructions of the kits, and the test results were converted into enzyme activity units according to the instructions. The rat liver was fixed in 4% paraformaldehyde for >24 hours and then embedded in paraffin to prepare paraffin sections. HE and Masson staining were used to detect the degree of tissue injury and fibrosis.After ethyl carbamate anesthesia, blood was collected from the inferior vena cava of rats and anticoagulated with heparin. According to the requirements of the ELISA kit, the blood samples were centrifuged at 3000 rpm for 15 min at low temperature, and the supernatant was obtained to analyze the blood samples according to the instructions. After ethyl carbamate anesthesia, blood was collected from the inferior vena cava. After sample collection and processing according to the manufacturer’s instructions, the blood samples were analyzed. The total RNA extraction kit was used to extract RNA from rat liver. The extracted RNA was reverse transcribed into cDNA using a cDNA synthesis kit. Transcripts of the inflammatory factors TNF-α, IL-1β, IL-6, and β-actin were detected by the SYBY GREEN detection kit. β-Actin transcript level was used as a reference for calculating the relative expression levels of various genes, expressed as the RQ value. The primer sequences used are shown in Table 1. Appropriate amount of liver tissue was weighed, and the total protein was extracted and quantified using a kit. The protein samples were homogenized and subjected to gel electrophoresis. Then, the proteins were transferred to a PVDF membrane via the wet method and blocked with 5% BSA for 1 hour before incubation with primary antibodies at 4°C overnight. After incubation, the membrane was washed with TBST four times and incubated with secondary antibodies at 37°C for 45 minutes. The membrane was washed with TBST four times to remove the secondary antibodies. Finally, the protein bands were developed, and the images were collected using an ECL photoluminescence solution and a gel imaging system. Relative expression of each protein was expressed as the ratio of the target protein/internal reference protein. ImageJ was used for semiquantitative analysis of HE staining, Masson’s trichrome staining, and protein bands. SPSS 25 was used for statistical analysis. GraphPad was used to generate graphs. One-way ANOVA was used to analyze differences among groups. A difference of was considered statistically significant. After the model construction was complete, the weights of the model rats were significantly higher than those of