Niu Jie Cao is a Chinese herb. Oxalis is effective in clearing heat and removing dampness (removing heat and dampness from the body), cooling the blood and detoxifying the toxin (referring to the treatment of blood-heat and toxicity). It is the root or the whole grass of the plant Oxalis, family Gramineae, also known as Chien Jin Cao, Chien Chien Tap, Chien Ren Pai, which is sweet, light, and cool in nature, and enters the kidney meridian and the liver meridian. It is used in the treatment of gonorrhea (increased frequency of urination, dripping and astringent pain), jaundice, fever, dysentery, dysuria, urinary dysfunction (unsmooth urination), pediatric convulsions (pediatric diseases mainly manifested by fainting, convulsions, convulsions), ulcers and swollen and painful sores, blood in the stool, bruises, etc. It is also used as a medicine for the treatment of pain and swelling of sores, sores and swelling of sores. Adverse reactions and contraindications of Niu Jiao Cao are not clear. Please use under the guidance of a professional Chinese medicine practitioner if necessary.