This is a single-center, prospective, non-randomized, open-label, phase II clinical trial aiming to evaluate the efficacy and feasibility of using patient-derived tumor organoid drug sensitivity testing (ODST) to guide personalized adjuvant therapy in patients with primary liver cancer (HCC) following curative liver resection. A total of 56 eligible patients will be enrolled. Tumor tissues obtained during surgery will be used to establish organoid cultures. Drug sensitivity testing will be performed on a panel of approved targeted and immunotherapeutic agents (including Apatinib, Atezolizumab + Bevacizumab, Donafenib + Toripalimab, Sintilimab, and FOLFOX) to identify the most effective treatment for each patient. Patients for whom organoid testing fails or results are unavailable within the specified timeframe will receive standard Lenvatinib treatment. The primary endpoint is Recurrence-Free Survival (RFS). Secondary endpoints include Overall Survival (OS) and safety profiles. The study seeks to provide a novel strategy for personalized adjuvant therapy in HCC to improve patient outcomes.