This clinical study aims to evaluate the efficacy and safety of Retlirafusp alfa Injection (SHR-1701) combined with apatinib in patients with advanced hepatocellular carcinoma (HCC) who have experienced disease progression after first-line targeted combined immunotherapy, and provide clinical evidence for the second-line treatment of advanced HCC. A total of 80 patients with radiologically or pathologically confirmed advanced/unresectable hepatocellular carcinoma with disease progression after prior first-line targeted-immunotherapy will be enrolled within 2.5 years. All enrolled patients will receive intravenous infusion of SHR-1701 at 30 mg/kg every 3 weeks in combination with oral apatinib 250 mg once daily; treatment will be maintained until disease progression or intolerable adverse toxicity occurs. The primary study endpoint is objective response rate (ORR).