Pancreatic cancer may be painless, most pancreatic cancer pain is more noticeable, and in some patients the tumor is small or the tumor is in the body or tail of the pancreas, and the patient may have no pain. The body and tail of the pancreas are relatively free. If the patient’s tumor is small and on the surface of the body of the pancreas or on the surface of the tail of the pancreas, the patient has no pain, and if the tumor grows to the side of the abdominal cavity without invading the retroperitoneal nerves, the patient’s pain is also less severe. The disadvantage of pancreatic cancer without pain is that it is not easy for patients to find out, and the condition is late when there are symptoms, and the treatment effect is usually very poor when the mass is larger or the mass has metastasis.