Serum amylase 900 units per liter in pancreatitis, but no symptoms, consider the patient insensitive to pain. Under normal circumstances, the normal value of serum amylase is 28-100 units per liter, elevated serum amylase can be seen in acute parotitis, acute pancreatitis, because pancreatic amylase enters the bloodstream and is excreted through the kidneys, so amylase in the urine and blood will be significantly elevated. Blood amylase is an important indicator for the diagnosis of acute pancreatitis and is significantly diagnostic when it exceeds three times the normal high value. Blood amylase begins to rise 6 to 12 hours after the onset of the disease and usually lasts for 3 to 5 days. However, a markedly elevated level of amylase in the blood does not necessarily indicate that the condition is more serious, and although it is associated with pancreatic lesions, cholelithiasis, inflammation of the gallbladder, and peptic ulcers, can also lead to high levels of amylase in the blood. Patients with markedly elevated amylase levels do not have the abdominal pain symptoms of pancreatic inflammation and may not be sensitive to pain, but pancreatic malignancy, cholecystitis, and perforated peptic ulcers need to be ruled out, and it is recommended that the patient be seen in the hepatobiliary surgery department of a regular hospital.