Indigestion can be observed in various gastric diseases such as gastrointestinal dysfunction, chronic gastritis, and peptic ulcers, all of which can exhibit symptoms of indigestion. When experiencing symptoms of indigestion, attention must also be paid to diet. Firstly, one must quit smoking and drinking alcohol, avoid strong tea, coffee, fatty and heavy foods, spicy foods, fried foods, grilled foods, raw and cold foods, as well as sweets. One should avoid consuming milk, soy milk, glutinous rice, sweet potatoes, and other such foods. This is because some of these foods can increase gastric acid secretion leading to a worsening of gastric diseases, and some are difficult to digest, exacerbating symptoms of indigestion; therefore, they are not recommended. It is advised to increase physical activity, as exercise can promote gastrointestinal motility, which is effective in improving symptoms of indigestion.