1, different characters: mother-of-pearl is a perennial semi-twining herb of Pinctada of Pinctada family. Pearl powder is made by grinding the stems of mother-of-pearl oysters.

2. Different effects: Mother-of-pearl has the effects of clearing away heat, calming the nerves, improving eyesight and eliminating nebula, and can be used to treat insomnia, dizziness, dizziness, fright, cataract and other diseases. Pearl powder has the effects of clearing away heat and calming the nerves, improving eyesight and eliminating nebula, and can be used to treat red eyes, swelling and pain, tears in the wind and blurred vision.