The turbid amount of mucus in the fundus of the stomach may be caused by gastric emptying obstruction, gastroenteritis, tumor lesions and other reasons. 1. Gastric emptying obstacle: due to the lack of anti-reflux barrier, the food in the stomach returns to the esophagus abnormally, the lower esophageal sphincter insufficiency or the peristaltic movement of the stomach and esophagus is weakened, which leads to the turbid amount of mucus in the bottom of the stomach. 2. Gastroenteritis: Gastroenteritis is caused by pathogenic microorganisms, different microorganisms lead to different characteristics, such as rotavirus infection can destroy the gastric mucosa mucus pus and blood, which may also lead to the phenomenon of turbid amount of mucus in the fundus of the stomach. 3. Tumor lesions: due to the stimulation of the tumor leads to excessive secretion, the stomach wall is violated, the structure changes, the pylorus is blocked by the tumor, the gastric lumen is narrowed, the gastric juice and esophageal secretion can not flow downward, but can only reflux upward, resulting in the bottom of the stomach mucus turbid and large amount. If there is a cloudy amount of mucus in the fundus of the stomach, it is recommended to consult a doctor in time, identify the cause of the disease under the guidance of a professional physician and carry out standardized treatment.