The efficacy, safety and post-treatment disease control will be compared between groups of continuous subcutaneous Beinaglutide infusion and continuous subcutaneous insulin infusion (CSII) in adult patients with newly diagnosed type 2 diabetes.

Based on the dual roles of glucagon-like peptide 1 (GLP-1) in regulating fasting blood glucose and postprandial blood glucose secretion, we adopted a combinational therapeutic model and will administer drug treatments during meals. Newly diagnosed type 2 diabetic patients will be administered continuous subcutaneous Beinaglutide injections using a pump device. The efficacy, safety and disease control after terminating the drug treatments will be compared to those of patients who receive CSII treatment.

This is a national-level, multicenter, randomized, open study with parallel controls. The study consists of two phases:

a 8-week treatment phase and a 12-week post-treatment follow-up period.

Inclusion Criteria:

1. Age 18 to 70 years (inclusive) at enrollment, regardless of gender.
2. Voluntary signing of the informed consent form.
3. Newly diagnosed type 2 diabetes mellitus patients, diagnosed according to the WHO 1999 criteria, with a disease duration ≤1 year.
4. HbA1c between 7.5% and 10.0%.
5. BMI between 24 kg/m² and 42 kg/m².
6. Subjects who have not taken antidiabetic medications or have used oral antidiabetic medications for less than 3 months and have discontinued for more than 1 month (calculated from the date of signing the informed consent form).
7. Subjects with reproductive potential (including male subjects whose partners have reproductive potential) agree to use effective contraception during the study and for 1 month after study completion.

Exclusion Criteria:

1. Patients with type 1 diabetes or other types of diabetes.
2. History of obstructive intestinal diseases or potential complications: subjects with post-abdominal surgery or peritoneal infection-related intestinal adhesions, intestinal obstruction sequelae; subjects with intestinal motility disorders, chronic constipation; subjects with a history of Crohn's disease or ulcerative colitis.
3. History of pancreatitis.
4. Family history of medullary thyroid carcinoma.
5. History of malignant tumors.
6. ALT, AST >3 times the upper limit of normal, and/or total bilirubin >2 times the upper limit of normal.
7. Moderate to severe renal insufficiency (eGFR <60 ml/min/1.73m²).
8. Triglycerides ≥5.0 mmol/L.
9. Multiple endocrine neoplasia type 2 (MEN 2).
10. Participation in any pre-marketing drug study within 3 months.
11. Use or expected use of systemic corticosteroids, immunosuppressants, or cytotoxic drugs during the study period.
12. History of diabetic ketoacidosis or non-ketotic hyperosmolar coma within 6 months prior to screening.
13. Blood pressure exceeding the following criteria (untreated or treated): systolic blood pressure ≥160 mmHg and/or diastolic blood pressure ≥100 mmHg.
14. History of any of the following cardiovascular diseases within 3 months prior to screening: acute myocardial infarction, New York Heart Association functional class III/IV heart failure or left ventricular ejection fraction ≤40%, or cerebrovascular event (stroke).
15. Allergy to binaclotide or any component of the study drug, or allergy to insulin or any component of the insulin used in the study.
16. Presence of other severe diseases that may interfere with the study, as judged by the investigator.
17. Pregnant or breastfeeding women.
18. Poor compliance, as judged by the investigator, and inability to complete the study as required.
19. Inability to undergo continuous pump infusion: subjects allergic to subcutaneous infusion tubes or adhesive tape; subjects unwilling to have long-term subcutaneous infusion tubes or continuous pump use; subjects with psychological aversion to pump therapy; subjects or their families lack relevant knowledge and are unable to master the use after training; subjects with severe psychological disorders or mental abnormalities; subjects who are unable to care for themselves and have no caregivers.
20. Any other factors deemed unsuitable for participation in the study by the investigator.