Leonurus macranthus Maxim. is a perennial herbaceous plant in the family Lamiaceae, with a height of 60-120 cm. The rhizome is woody and runs diagonally, with fine fibrous roots densely growing on top; There are often deep incisions on the heart-shaped circular lobes of the stem and leaves at the bottom; The inflorescence is axillary without stems, the corolla is light red, the crown tube gradually increases upwards, and the ovary is brown and hairless; Small nuts are oblong triangular black brown in color; The flowering period is from July to September, and the fruiting period is in September. Da Hua Yi Mu Cao was first recorded in the "Shen Nong Ben Cao Jing". It is named after its large flowers that are beneficial to women.