The signs of stomach cancer cannot be seen through the palm of the hand. More than 70% of early gastric cancers usually have no obvious symptoms, and only when the disease develops to a certain degree do conscious symptoms appear, such as epigastric discomfort, acid reflux, belching, early satiety and other non-specific dyspeptic symptoms. In middle and late stage stomach cancer, epigastric distension and pain, difficulty in swallowing and nausea, loss of appetite and lethargy, vomiting blood, belching, acid reflux, black stool and other symptoms may appear. The above mentioned symptoms cannot be judged by observing palms of hands, so they cannot be linked with the signs of stomach cancer. If the patients have the above mentioned discomforts, it is recommended that they go to the hospital for relevant examination. Only by looking at the palm of the hand, it is not possible to tell whether there is stomach cancer or not. Physical examination, tumor marker, gastroscopy, pathological tissue biopsy, ultrasound and other examinations should be carried out in the hospital for clarification. At present, gastroscopy and gastric histopathological biopsy are the most authoritative diagnostic methods to diagnose stomach cancer. Meanwhile, middle and late stage stomach cancer patients will have symptoms such as epigastric distension and pain, nausea, loss of appetite, belching, acid reflux, black stool and so on. Early stage stomach cancer patients mostly have no obvious symptoms. If the above symptoms occur, it is recommended to go to the hospital in time and follow the principle of early detection and early treatment.