Gypsum usage is first decoction, you can make water to drink, but it is not recommended to blindly use gypsum to make water to drink. Gypsum is a sulfate mineral gypsum group gypsum, mainly containing hydrated calcium sulfate, sweet, pungent, cold, attributed to the lung, stomach meridian. It belongs to the category of heat-clearing and fire-eliminating medicines, with the efficacy of heat-clearing and fire-eliminating, eliminating vexation and quenching thirst, and is used for the treatment of exogenous fever, high fever and vexation and thirst, cough and wheezing of lung heat, hyperactive gastric fire, headache, toothache and other illnesses. It is not to be used if the spleen and stomach are cold and there is Yin deficiency and internal heat. Gypsum is recommended to be decocted first and can be used to make water for drinking. However, for the sake of medication safety, it is not recommended to blindly use gypsum in water. Because gypsum is cold, it is not recommended to drink for a long time. In addition, unlike the effect of decoction, the efficacy of the drug is limited, and it does not have a good effect on the treatment of diseases. If there is physical discomfort, it is recommended to consult a doctor in time.