Abstract: The occurrence of cardiovascular disease (CVD) is mainly affected by the environment and heredity, and the major causes include blood abnormalities such as hyperglycemia and hyperlipidemia, as well as diabetes and atherosclerosis (AS). CVD has become a heavy health burden on individuals. The current status of research on the preventive effect of tea functional ingredients such as polyphenols, polymerized catechins and polysaccharides alone and in combination with natural products on CVD is summarized. The major underlying mechanisms are reviewed such as by reducing blood glucose and lipids, regulating intestinal function, preventing AS or exerting other related protective effects. Directions for future utilization and research of tea functional components are also proposed. This review will provide a theoretical reference for the prevention of sub-health by drinking tea and for the development of functional tea products.

Key words: tea functional components; metabolic disease; synergistic effect; cardiovascular disease; mechanism