Normal ultrasound of the pancreas, normal blood amylase, and high urine amylase can not directly diagnose pancreatitis, but may also be other diseases, such as salivary gland diseases such as salivary gland tumors and the use of some drugs, which can also lead to elevated urine amylase. Ultrasound examination of the pancreas cannot directly diagnose pancreatitis. The diagnosis of pancreatitis is based on the patient’s clinical manifestations, laboratory tests and imaging studies. If the patient has an acute onset of abdominal pain that is persistent and severe epigastric pain, often radiating to the back; serum amylase and/or lipase that is at least three times higher than the upper limit of normal; and imaging that shows pancreatitis changes such as pancreatic enlargement, exudation, or necrosis. The diagnosis of acute pancreatitis is made when 2 of the 3 features are met. Other diseases, including salivary gland diseases such as salivary gland tumors, can lead to an increase in salivary amylase secretion, which can also lead to a patient with a normal b-ultrasound of the pancreas, normal blood amylase, and high urinary amylase. In addition, injection of morphine, oral contraceptives, sulfonamides, etc. can also appear this phenomenon. When the patient has the above situation, he should go to the hospital in time, under the guidance of the doctor to clarify the cause of the disease, and actively treat it, so as not to delay the condition.