Enteral nutrition preparation should not be supplemented according to the instructions or the way of eating recommended by the merchant. The dose requirement in medicine is 400-600 Kcal measurement or more, but this dose requirement does not apply to all patients, and the principle of individualization should be followed. First understand the patient’s diet, after the professional calculation and guidance of the dietitian recommended for supplementation, not on their own or only refer to the instructions to eat. When starting to use, especially for the elderly, you can start with low dose or low concentration, such as the standard dose of five spoons with 200ml of warm water, the first dose can be 2-3 spoons with 100-200ml of warm water, no obvious discomfort after eating, and then increase the concentration and frequency.