The formula of Lost Smile San is mainly Pu Huang and Wu Ling Yi. Lost Smile San is mainly composed of Pu Huang and Wu Ling Zhi in equal parts, which has the effect of activating blood circulation, removing blood stasis, dispersing knots and relieving pain, and can treat pain in the epigastrium (abdomen), menstrual disorders, stabbing pain in the heart and abdomen caused by stagnation of blood stasis, which is a basic formula for treating pain caused by blood stasis and is good at treating blood stasis of the liver menstruation. Among them, Wu Ling Lipid is salty, bitter, sweet, warm in nature, and has the efficacy of activating blood circulation, removing blood stasis and relieving pain after being studied in wine; Pu Huang is sweet in taste, flat in nature, and has the efficacy of resolving blood stasis and stopping hemorrhage after being stir-fried, and the two of them, when used together, can play the efficacy of activating blood circulation and removing blood stasis and dispersing knots to relieve pain. The adverse effects of the above prescription are not clear; pregnant women should not use; patients with weak spleen and stomach and menstruating women should be cautious. If you need to use Lost Smile San, you need to standardize the use of medication under the guidance of a traditional Chinese medicine practitioner, do not take it arbitrarily.