The choice between abdominal ultrasound or abdominal CT is based on the disease, including gallbladder stones, pancreatic diseases, gastric cancer and other diseases, which is better, the situation is as follows: 1. Gallbladder stones: For patients with gallbladder stones, the advantages of abdominal ultrasound are greater than abdominal CT, because there are many stones that cannot be shown on X-rays, but to observe gallbladder stones and morphological lesions of the gallbladder, upper abdominal CT enhancement should be chosen. 2. Pancreatic diseases: For patients with pancreatic diseases, whether it is pancreatitis or pancreatic cancer, the advantage of CT enhancement of the upper abdomen is much greater than that of abdominal ultrasound, and CT can make a clear diagnosis. 3. Stomach cancer: For patients with stomach cancer, ordinary abdominal ultrasound cannot capture the lesion, and specialized abdominal CT enhancement can clarify the location of the stomach cancer lesion and the surrounding lymph node metastasis. In general, CT has advantages over color ultrasound in most cases, but the choice of abdominal color ultrasound and abdominal CT in practice needs to be decided according to different perspectives of doctors observing the disease.