Liraglutide-bolus vs Glargine-bolus Therapy in Overweight/Obese Type 2 Diabetes Patients (LiraGooD)

Inclusion Criteria: * Age: 18 - 75 years old. * BMI must be greater than 24 and less than 45 kg/m2 * Patients with type 2 diabetes who met the World Health Organization (who) diagnostic criteria (1999). * Newly diagnosed type 2 diabetic patients with HbA1c ≥ 9.0%；or patients with uncontrolled type 2 diabetes (HbA1c ≥ 7.5% ) who have received at least two types of oral hypoglycemic drugs (the dose of each drug needs to reach the second largest dose or more), or only insulin (excluding basal-bolus insulin therapy), or insulin with oral hypoglycemic drugs. * Signed informed consent. Exclusion Criteria: * History of pancreatic disease, * History of medullary thyroid carcinoma * Lipase level \> 3 times above normal, * Creatinine clearance ≤ 30 mL/min/1.73m2, * Evidence in the last 6 months of significant heart disease or stroke, including myocardial infarction, unstable angina, coronary bypass and/or percutaneous transluminal coronary angioplasty, congestive heart failure (New York Heart Association Functional Classification III-IV), or severe ischemic heart disease. * Preparation for pregnancy or having been in pregnancy * Researchers believe that there are any factors that affect assessing subjects' participation in trial. * Patients unable to cooperate in clinical trials