Objective To investigate the clinical effect of carbapenem antibiotics combined with hemofiltration for the treatment of septic shock. Methods A total of 100 patients with septic shock were randomly divided into control group or observation group, with 50 cases in each group. The control group received carbapenem antibiotic therapy, while the observation group received carbapenem antibiotics combined with hemofiltration for treatment. The clinical efficacy after treatment, pre⁃ and post⁃operative oxygen metabolism indicators with respect to central venous blood oxygen saturation (ScvO₂), oxygenation index (PaO₂/FiO₂), lactic acid, hemodynamic parameters in terms of central venous pressure (CVP), cardiac output (CO), mean arterial pressure (MAP), inflammatory factors including C⁃reactive protein (CRP), procalcitonin (PCT), white blood cell counts (WBC) , immune functions (CD3+, CD4+, and CD8+ T lymphocytes, as well as CD4+/CD8+ ratio), and disease severity with respect to Acute Physiology and Chronic Health Evaluation Ⅱ(APACHEⅡ ) score and Sequential Organ Failure Assessment (SOFA) score were compared between patients of the two groups. Results After treatment, the total clinical effective rate in the observation group was higher than that in the control group (P<0.05). After treatment, both groups exhibited higher ScvO₂, PaO₂/FiO₂, CVP, CO, MAP, and CD3+, CD4+ T lymphocytes, and CD4+/CD8+ ratio as compared with before treatment; moreover, the observation group yielded higher indices as above as compared with the control group (P<0.05). Both groups interpreted lower lactic acid level, serum CRP and PCT levels, WBC, CD8+ T lymphocytes, APACHEⅡ score, and SOFA score compared to before treatment; in addition, the observation group exhibited lower aforementioned indices as compared with the control group (P<0.05). Conclusion Carbapenem antibiotics combined with hemofiltration for the treatment of septic shock can improve oxygen metabolism and hemodynamic state, suppress inflammatory response, improve immune function recovery, and ameliorated organ function, exerting relatively high clinical application value.