On the third day of the third lunar month, people in China have the custom of eating local dishes and boiling eggs. Shepherd's purse, a local dish, can be seen everywhere on the roadside or in the wild. It is not only nutritious, but also can treat many diseases. There is not only a folk proverb that "shepherd's purse is a panacea on March 3", but also a saying that "eating shepherd's purse in spring is an elixir". It can be seen that shepherd's purse is not only a delicacy, but also a panacea. In traditional Chinese medicine, shepherd's purse has a wide range of medicinal value and is known as "licorice in vegetables". Chinese medicine believes that shepherd's purse is sweet in taste and cool in nature, and belongs to liver, spleen and kidney meridians, which has the effects of harmonizing spleen, promoting diuresis, stopping bleeding and improving eyesight.