• Age ≥18 years old, male or female

• Hepatocellular carcinoma patients diagnosed by cytology or tissue puncture, or who meet clinical diagnostic criteria and cannot be treated with radical treatment (radical surgery, ablation, radiotherapy, etc.)

• Disease progression after first-line targeted combined immune system therapy (as per RECIST1.1 criteria)

• Life expectancy exceeds 3 months

• ECOG physical condition score 0\

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• Women of childbearing age must have a serum pregnancy study done within 7 days before the first medication, and the result is negative. Female subjects of reproductive age and male subjects whose partners are women of reproductive age must consent to contraception within 24 weeks from the date of signing the informed consent to the last administration of the study drug

• Before the first dose of the investigational drug, the laboratory test values met the following conditions: ①blood routine (no blood transfusion within 14 days before screening, no hematopoietic stimulating drug correction) : white blood cell count (WBC) ≥ 2.0 × 109/L; platelet (PLT) ≥ 60× 109/L; hemoglobin content (HGB) ≥ 8.0 g/dL; ② Liver function: aspartate transferase (AST) ≤ 2.5x ULN; alanine aminotransferase (ALT) ≤ 2.5 x ULN; Serum total bilirubin (TBIL) ≤ 1.5 x ULN (except Gilbert syndrome total bilirubin ≤ 3.0 mg/dL); ③ Renal function: serum creatinine ≤ 1.5 x ULN or creatinine clearance rate (CrCl) ≥ 50 mL/minute; ④ Coagulation function: international normalized ratio (INR) ≤ 1.5 x ULN, activated partial thromboplastin time (APTT) ≤ 1.5 x ULN (only for patients who are not currently receiving anticoagulant therapy, patients who are currently receiving anticoagulant therapy should receive a steady dose of anticoagulant therapy)

• The subjects voluntarily joined the study, signed the informed consent, had good compliance, and cooperated with the follow-up