Since ancient times, eating wild plants has been a crucial component of human diet and traditional medicine. Nevertheless, despite all of the presumptions. First, it is acknowledged that wild vegetation is a valuable source of nourishment and is safe to eat. In this review plant secondary metabolites are discussed such as flavonoids, phenolic acid, anthocyanins, tannins, terpenoids, steroidal saponins, glucosinolates which are very helpful to human and animal health. If we explore some more about Rumex then twenty-nine Rumex species' & two hundred sixty-nine chemical compounds have so far been made public. Important phytochemicals such as anthraquinones, flavonoids, tannins, stilbenes, naphthalene, diterpene alkaloids, terpenes, and lignans all have a variety of pharmacological effects, including anti-inflammatory, antioxidant, anti-bacterial, and anticancer effects.