Kang-ai injection (KAI) is an authorized herbal medicine used in cancer treatment. However, its clinical efficacy in hepatocellular carcinoma (HCC) has not been investigated thoroughly. To systematically evaluate the efficacy and safety of KAI in patients with HCC. The Web of Science, PubMed, Cochrane Library, EMBASE, CBM, CNKI, VIP and Wanfang databases were systematically searched (date range: inception to December 2020) using the key terms ‘Kang-ai injection’ and ‘hepatocellular carcinoma’. The current analysis included controlled...