This study aims to investigate the impact of pancreatic exocrine insufficiency on the glucose profile and pancreatic and gastrointestinal endocrine hormones in patients with chronic pancreatitis through pancreatic enzyme intervention in a reverse manner.

The primary objective is to observe the changes in glucose profile following pancreatic enzyme intervention in patients with chronic pancreatitis complicated by exocrine insufficiency and normal glucose metabolism.

The secondary objective is to observe the changes in pancreatic endocrine and exocrine functions and gastrointestinal endocrine hormone levels following pancreatic enzyme intervention in patients with chronic pancreatitis complicated by exocrine insufficiency and normal glucose metabolism.

Inclusion Criteria:

• 1. Male or female Chinese subjects aged 18 years or older; 2. Patients with a clear diagnosis of chronic pancreatitis; 3. Glycated hemoglobin (HbA1c) levels between 4% and 6%; 4. FE-1 < 100 µg/g.

Exclusion Criteria:

• 1. A history of diabetes or prediabetes, or preoperative glycated hemoglobin (HbA1c) ≥ 6.0% or fasting venous glucose ≥ 6.1 mmol/L; 2. Positive for islet-related antibodies; 3. Patients who are currently receiving or have previously received pancreatic enzyme replacement therapy (PERT); 4. Allergy to the components of PERT drugs; 5. Exocrine pancreatic insufficiency (EPI) caused by other reasons, such as post-gastrectomy or post-intestinal resection; 6. Undergoing pancreatic surgery other than endoscopic retrograde cholangiopancreatography (ERCP); 7. Renal disease of stage G3, G4, or G5; 8. Decompensated chronic liver disease; 9. Receiving glucocorticoid therapy; 10. Pregnant or breastfeeding women; 11. Patients with malignant tumors.