There is no definitive evidence regarding the therapeutic efficacy of PD-1 inhibitors combined with tyrosine kinase inhibitors (TKIs) after disease progression following first-line treatment with bevacizumab plus sintilimab for unresectable hepatocellular carcinoma (HCC). There is insufficient evidence to support which TKI should be combined with PD-1 inhibitors as the optimal second-line treatment option after first-line therapy failure. Data on the application of lenvatinib as a second-line treatment are limited, whereas the efficacy and safety of regorafenib combined with PD-1 inhibitors have been preliminarily validated \[9\]. Therefore, this study aims to compare the efficacy and safety of PD-1 inhibitors combined with either lenvatinib or regorafenib after disease progression following first-line bevacizumab plus sintilimab treatment for unresectable HCC, providing evidence-based guidance for the selection of second-line treatment regimens in clinical practice.