1, antipruritic: duckweed can relieve rubella, skin itching and other symptoms caused by exogenous wind and heat. Detumescence: it can enter the lung meridian and bladder meridian to relieve edema.

2, heat and detoxification: can dispel damp heat, evacuate wind and heat, reduce the discomfort caused by moisture. Anti-inflammatory and sterilization: it can avoid bacterial infection and has a certain inhibitory effect on Escherichia coli.