This study evaluates whether comprehensive local consolidative therapy added to continued sintilimab plus lenvatinib improves survival compared with continued sintilimab plus lenvatinib alone in patients with oligo-extrahepatic metastatic hepatocellular carcinoma. All enrolled participants receive induction treatment with sintilimab plus lenvatinib for 4 cycles. Participants who achieve disease control and are confirmed by central multidisciplinary review to be feasible for complete consolidation are randomized in a 1:1 ratio to receive either comprehensive local consolidative therapy followed by continued systemic therapy or continued systemic therapy alone. The primary outcome is overall survival.