Hedyotis diffusa is an annual capillary-free herb, mainly distributed in the southeast and southwest of China. Also known as Hedyotis diffusa, Hedyotis diffusa, Phyllanthus urinaria, Cruciferae, etc. Plant height 15-50 cm, white funnel-shaped flowers, 3.5-4 mm long, oblate fruit, brownish yellow, 2-2.5 mm in diameter, and flowering in.

As a herb, Hedyotis diffusa can green the environment in life, and its main functions are to enhance the body's immunity, diminish inflammation and sterilize, and clear away heat and toxic materials.