Novel coronavirus pneumonia is a category B infection to which the population is generally susceptible, and the key to prevention is not to come into contact with the source of infection. The new coronavirus mainly invades the mucosal epithelial cells of the respiratory tract and proliferates in the epithelial cells. Daily drinking more water is beneficial, but should be in moderation, too much water will instead make the body electrolyte imbalance. Poor heart function, chronic kidney disease, drinking too much water will aggravate the condition.