At present, the price of a pair of Lost Smile San is around 20 yuan to 80 yuan due to different places of origin, different dealers and other factors. The price of Lost Smile San is affected by different grades of traditional Chinese medicine, different sales channels, different urban areas and other factors, the specific price varies. At present, the price of one pair of Lost Smile San is about 20 yuan to 80 yuan. Lost Smile San is a traditional Chinese medicine formula composed of Wu Ling Ling Lipid and Pu Huang. In the formula, Wu Ling Lipid has the efficacy of facilitating blood circulation, dispersing blood stasis and relieving pain; Pu Huang has the efficacy of promoting blood circulation and eliminating blood stasis; the combination of the two medicines has the efficacy of promoting blood circulation, eliminating blood stasis, dispersing knots and relieving pain. It is used for heart and abdominal pain caused by stagnation of blood stasis, post-partum discharge, and acute pain in the lower abdomen. The adverse reactions, contraindications and precautions of Lost Smile San are not clear at present. If there is a need for medication, should be used under the guidance of a traditional Chinese medicine practitioner to identify the evidence, not blindly use their own drugs, so as not to cause adverse effects on the body.