Purpose: Patients with cardiovascular disease (CVD) or diabetes often require informal care. The burden of informal care, however, was not fully integrated into economic evaluation. We conducted a literature review to summarize the current evidence on economic burden associated with informal care imposed by CVD or diabetes. Methods: We searched EconLit, EMBASE, and PubMed for publications in English during the period of 1995–2015. Keywords for the search were informal care cost, costs of informal care, informal care, and economic burden.