The function of Guang Fangji is mainly to dispel wind and relieve pain, clear heat and promote water circulation. The clinical requirements for GFG are relatively high, because it contains aristolochic acid, so it should not be used in large quantities, and each internal dose is usually less than 10g, in a reasonable combination of drugs, to prevent the aristolochic acid in GFG from causing damage to the kidneys and liver. It can also be used to treat urinary tract infections that cause unfavorable urination, and to treat body edema, especially lower limb edema, with the best results. It can also be applied to treat body edema, especially lower limb edema. It can be applied to symptoms of dampness and heat in the body, such as cystitis and inflammation of urinary tract infection. The clinical application of Guang Fang Qi must be cautious, otherwise serious complications may occur, which will not be worth the loss.