Amylase 900 is more serious, consider the possibility of acute pancreatitis, should be hospitalized. The normal value of blood amylase is 0~100U/L, generally more than 3 times the upper limit of normal value (>300U/L) should be alert to the possibility of pancreatitis. The normal value of urinary amylase is 10~490U/L, and relevant literature shows that a value greater than 900U/L also needs to be alerted to the possibility of pancreatitis. However, amylase 900 only suggests the possibility of acute pancreatitis, and is not directly related to the specific severity of pancreatitis. The diagnosis of acute pancreatitis should be confirmed by history, signs and symptoms, abdominal ultrasound, abdominal CT, blood tests, and other imaging and laboratory data. Acute pancreatitis is a disease with a high morbidity and mortality rate, and the morbidity and mortality rate of severe pancreatitis with shock or multi-organ failure is about 30%. Treatment of the disease includes fasting, gastrointestinal decompression, rehydration, antishock, analgesia and antispasmodic, nutritional support, antibiotic use, and some severe patients may require surgery. In conclusion, amylase 900+ is a serious condition that should be taken seriously and hospitalized promptly to avoid serious consequences.