The normal range of blood amylase is 35 to 135 U/L and 24-hour urine amylase <1000 U/L. Increased blood amylase can be seen in acute pancreatitis; can also be seen in acute attacks of chronic pancreatitis, pancreatic cysts, pancreatic duct obstruction; can also be seen in peptic ulcer perforation, epigastric surgery, mechanical intestinal obstruction, etc.; ethanol intoxication can also cause amylase increase; pancreatic cancer early amylase will be increased. Decreased blood amylase can be seen in chronic pancreatitis, pancreatic cancer, renal failure and macroamylasemia. Clinically, the normal range of blood amylase is 35~135U/L, 24-hour urine amylase<1000U/L. If there is any abnormality in the amylase test value, you should go to the hospital in a timely manner, and clarify the cause of the disease under the guidance of a professional physician, so as to avoid delaying the condition.