Apigenin is a naturally occurring flavonoid compound that exists in a variety of plants in the form of phyto yellow pigment. Widely distributed in nature. It is mainly found in the plants of Ruixiang family, Verbenaceae, and Selaginella family. It is widely distributed in vegetables and fruits in the temperate tropics, especially in celery.

A large number of studies at home and abroad have found that apigenin has a variety of biological activities such as anti-tumor, cardio-cerebral vascular protection, anti-virus, and anti-bacterial activities.