Getting up in the morning and vomiting yellow water and still feeling bitter may be due to stomach diseases, improper diet, and cold and fever. Stomach diseases, such as gastritis and poor gastrointestinal tract function, may cause the symptoms of vomiting yellow water and feeling bitter. If the diet is not good, often eat food that is not easy to digest, or eat greasy, stimulating food, will affect the peristalsis of the intestines and stomach, resulting in a large amount of food residue accumulation in the intestines and stomach can not be discharged, the intestines and stomach ventilation difficulties, it will cause the problem of vomiting yellow water and also very bitter. If the symptoms of cold and fever are not relieved in time, it will lead to the problem of dry mouth and bitter tongue, which will also lead to a decrease in appetite, resulting in the situation of yellow water with bitterness. Patients can relieve the situation of yellow water and bitterness in the morning by eating regularly, not overeating, eating balanced nutrition, eating grains and cereals appropriately, and exercising moderately to strengthen the resistance.