Getting up in the morning and vomiting yellow water, which is also very bitter, is usually caused by bile reflux. It can be caused by improper diet, pregnancy, gastritis and other conditions. Common causes and related treatment measures are as follows: 1. Improper diet: Patients often eat indigestible, greasy, stimulating food or drink alcohol, which causes imbalance of gastric acid and bile excretion, resulting in vomiting yellow water and also very bitter. Generally, it is not recommended to use drugs, you can avoid the phenomenon of getting up in the morning and vomiting yellow water and bitter by regular diet, no alcohol abuse, less spicy and greasy food, with daily exercise; 2, pregnancy reaction: such as early pregnancy reaction of pregnant women, due to hormonal stimulation caused by the increase in stomach acid, the symptoms of getting up in the morning and vomiting yellow water and bitter. Generally is a normal physiological phenomenon, diet pay attention to light, eat more fresh vegetables, fruits, etc. to relieve symptoms; 3, gastritis: patients suffering from bile reflux gastritis, will be due to the pylorus malfunction, the duodenum occurs retroperistalsis, resulting in bile reflux into the mouth, vomiting yellow bitter water symptoms. It is recommended that patients should immediately go to the hospital, check the electronic gastroscopy, after diagnosis can be oral acid suppressants and mucosal protective agents and other drugs for treatment; 4, other: biliary obstruction, gallstones, cardia loss of relaxation disease can lead to bile reflux, causing the symptoms of vomiting yellow bitter water. If you always get up in the morning and vomit yellow bitter water, it is recommended to seek medical attention to identify the cause and treat the symptoms.