SOLID-DKD

1. Male or female subjects, 18-75 years of age at the time of signing informed consent;

2. Body weight ≥50 kg, 20.0 kg/m2 ≤BMI ≤40.0 kg/m2;

3. Diabetic kidney disease was diagnosed, and the eGFR≥30 mL/min/1.73 m2;

4. Had a history of T2DM at least 3 months, or had diabetic retinopathy as assessed by the investigators;

5. UACR ≥300 and <3000 mg/g;

6. HbA1c ≥6.5% and ≤10.0%;

7. ACEI/ARB was used for ≥3 months and ACEI/ARB was stabilized at either the maximum recommended dose (reference to the drug label) or the maximum tolerated dose within 4 weeks;

8. Use hypoglycemic drugs for ≥3 months (the dosage of SGLT2i remains stable if used);

9. Able and willing to provide a written informed consent;

1. Have type 1 diabetes mellitus or specific type of diabetes;

2. Acute kidney injury or dialysis treatment within 6 months;

3. Kidney transplantation is planned during the trial;

4. History of acute cardiovascular and cerebrovascular diseases within 6 months prior to screening;

5. Any organ-system malignancies developed within 5 years except for cured local basal cell cancer of the skin and in-situ cancer of the cervix;

6. history of blood donation or blood loss in the 3 months before screening, or blood transfusion in the 2 months before screening;

7. Female who is pregnant, breast-feeding or intends to become pregnant or is of childbearing potential and not using an adequate contraceptive method;