Pearl powder is a white or white-like powder made from pearls produced by shellfish such as Hyriopsiscumingii (Lea), Cristariaplicata (Leach) and Pteriamartensii (Dunker), which has the special fishy smell of pearls. The main components of pearl powder are protein (hydrolyzed to obtain 18 kinds of amino acids, 7 of which are essential amino acids), calcium carbonate of aragonite structure, more than 20 kinds of trace elements and vitamin B. Pearl powder has been used medicinally in China for more than 2000 years. In the Three Kingdoms, the Three Kingdoms, the Liang Dynasty’s “Collection of Materia Medica”, the Tang Dynasty’s “Sea Medicine Materia Medica”, the Song Dynasty’s “Kaibao Materia Medica”, the Ming Dynasty’s “Compendium of Materia Medica”, the Qing Dynasty’s “Lei Gong’s Pharmacopoeia Fu” and 19 other ancient medical texts, all have clear records of the healing effects of pearls, pearl powder can be used to calm the mind, brighten the eyes and eliminate opacities, detoxify and regenerate the muscle. In the pharmacopoeia, seawater pearls and freshwater pearls can be equally used in medicine, both have the effect of calming the mind, calming the eyes and eliminating cataracts, detoxifying the muscles, for palpitations and insomnia, panic and epilepsy, cloudy eyes, sores and ulcers do not converge. Pearl powder can be taken internally, the conventional dosage is 0.3-0.6g once orally, 2 times a day. The contents can also be taken for external use in appropriate amounts.