Color Doppler ultrasonography of the digestive system mainly examines some abdominal organs of the digestive system, including the pancreas, liver, spleen, gallbladder and so on. The examination of the digestive system mainly includes checking the volume and size of these organs, whether there is any foreign body, or whether there is any organic change, etc. There are abdominal ultrasound, CT, endoscopy and other examinations. Diseases that can be initially diagnosed by color Doppler ultrasonography of the digestive system include cirrhosis, fatty liver, gallbladder polyps, abdominal effusion, cholecystitis, gallbladder stones, pancreatitis, and liver occupancy. However, there is no significance to examine the stomach, duodenum, colon, jejunum, ileum and other organs. It is recommended to pay attention to fasting when checking the color Doppler ultrasound of the digestive system, if you take food, it is likely to affect the results of the examination. Under the guidance of the physician to improve the relevant examination, in order to clarify the diagnosis, active treatment.