Inclusion Criteria:  Body mass index (BMI) ranges from 18 to 27 kg/m2 (both ends included), and the body weight is ≥50 kg for men and ≥45 kg for women； Fasting blood glucose during the screening is < 6.1 mmol/L；  Exclusion Criteria:  It has clinical significance for abnormalities Laboratory examination, if there is a clear reasonable reason, can be retested within a week, with the retest results Whether the subject meets the requirements Severe systemic disease, or a prior history of pancreatitis or other systemic problems within 1 month prior to screening; Participate in any clinical trial of a drug or medical device within 3 months prior to screening (subject to signed informed consent)