The purpose of the study is to investigate the potential interaction between multiple oral doses of SHR3824 and multiple oral doses of SP2086 in healthy adult volunteers.

This is an open-label (volunteers will know the names of treatments they are assigned) single-center study of SHR3824 and SP2086 in healthy adult volunteers. SHR3824(a Sodium-Glucose Cotransporter 2 inhibitor) is currently under development to lower blood sugar levels in patients with type 2 diabetes mellitus (T2DM) ,and SP2086(a Dipeptidyl peptidase IV inhibitor) is also currently under development to lower blood sugar levels in patients with type 2 diabetes mellitus (T2DM).SP2086 will be administered orally (by mouth) as 100mg on Days 1, 2, 3, 4, 15, 16, 17 and 18, SHR3824 will be administered orally (by mouth) as 20mg on Days 11, 12, 13, 14, 15, 16, 17 and 18. Both SHR3824 and SP2086 tablets will be taken with 8 ounces (240 mL) of water.

Inclusion Criteria:

• Healthy volunteers with a body mass index (BMI, a measure of a person's weight in relation to height) between 19 and 24 kg/m2.

Exclusion Criteria:

• History of diabetes
• History of heart failure or renal insufficiency,Urinary tract infections, or vulvovaginal mycotic infections
• History of or current clinically significant medical illness as determined by the Investigator
• History of clinically significant allergies, especially known hypersensitivity or intolerance to lactose
• Known allergy to SHR3824 or SP2086 or any of the excipients of the formulation of SHR3824 or SP2086