Normal people can drink mineral water and pure water in moderation, and special people (such as hyperkalemia patients) are suitable for drinking pure water. 1. Mineral water: It is made by adding a certain amount of minerals artificially using suitable processing methods. After two-stage filtration treatment of water into the vat to receive activated carbon adsorption, activated carbon can remove foreign colors and odors, residual chlorine and so on. Then add potassium chloride and magnesium sulfate and other minerals in line with national food additive safety standards, adjust the taste to make it richer. 2. Pure water: water through electrodialysis, reverse osmosis, activated carbon adsorption, ion exchange, distillation and other physical and chemical methods. The main advantage is that it does not contain various ions, heavy metals, organic matter, microorganisms and other harmful, foul-smelling substances. There are no direct and potential factors that jeopardize human health, and the human body can drink it directly. It is especially suitable for people with hyperkalemia and other people.