Oyster generally refers to oyster, which is a tonic for kidney yin deficiency. Oyster belongs to Chinese medicine, which has the effects of heavy calming (using mineral and shell medicines to stabilize the mind), submerging yang and tonifying yin, and softening firmness and dispersing knots (softening and dispersing hard lumps). It is used for insomnia, tinnitus, scrofula (mainly refers to cervical lymph node tuberculosis), seminal emission, night sweating (abnormal sweating after going to sleep and stopping sweating after waking up). Clinically, it is used in combination with keel bone and cypress seed kernel to treat yin deficiency and hyperactivity of yang (deficiency of yin fluid and hyperactivity of yang); in combination with turtle shell and Colla Corii Asini, it is used in treating yin injury of fever and internal movement of deficiency wind; in combination with Astragalus and ephedra, it is used in spontaneous sweating (involuntary sweating during the daytime, which is aggravated with the slightest movement), spermatorrhea and night sweating (abnormal sweating after going to sleep, which stops after waking up), and shortness of breath. Oyster adverse reactions, contraindications are currently unknown. Care should be taken to ensure that the drug is not combined with ephedra, cornelian, and xinyi. If there is any discomfort, it is recommended to consult a traditional Chinese medicine practitioner for standardized treatment under the guidance of evidence-based treatment to avoid delay.