Inclusion Criteria:
1. Ability to understand the study and have signed the informed consent form;
2. Any adult ≥ 18 years old;
3. Pathologically confirmed high grade NMIBC defined as grade 2 or grade 3 disease;
4. Expected survival ≥ 6 months;
5. ECOG PS ≤2;
6. Sufficient organ functions, as defined below:
Investigations Hematology Absolute Neutrophil Count (ANC): ≥ 1.5 x 109/L Hemoglobin: ≥ 90 g/L Platelet: ≥ 100 x 109/L Liver Function Serum bilirubin: ≤ 1.25×ULN or 2.5×ULN（with Gilbert syndrome） AST \& ALT: ≤ 2.5×ULN Renal Function Creatinine Clearance (Cockcroft-Gault equation): ≥ 30 mL/min
7. Subject must be able to tolerate catheterization;
8. Female subject of childbearing potential and her spouse must use adopt effective contraception (non-pharmacological contraception required) from signing informed consent to within 6 months after the last instillation;
Exclusion Criteria:
1. Subject who is allergy to RAG-01 or similar products;
2. Except for TURBT, the subject received other anti-tumor treatments, and the last administration date is within ≤ 21 days or 5 half-lifes whichever is shorter from the date of signing ICF;
3. Subject with imaging examination diagnosed extravesical metastasis, including ureter and urethra;
4. Subject has other malignancies within the past 3 years, except for adequately treated carcinoma of the cervix, basal or squamous cell carcinomas of the skin, or adenocarcinoma of the prostate that has been surgically treated with a post-treatment PSA that is non-detectable;
5. The following illnesses have not been relieved to CTCAE 0-1:
1. Uncontrolled acute and chronic infections, such as pneumonia, biliary tract infection, hepatitis B virus infection and hepatitis C virus infection;
2. Dyspnea;
3. Acute and chronic kidney injury, and inflammation;
4. Urinary incontinence;
5. Urinary frequency;
6. Urinary tract obstruction (except benign prostatic hypertrophy);
6. Subject could not hold the urine for at least 90 mins due to any reason;
7. New York Heart Association (NYHA) 3 or 4 grade;
8. Coronary heart disease related symptoms have not been relieved to CTCAE 0-1, including: myocardial infarction, unstable angina pectoris, congestive heart failure and arrhythmia;
9. Subject with QTc \>470 msec.
10. Cerebrovascular accidents have not been relieved to CTCAE 0-1;
11. HIV positive; Active hepatitis B or C. For active HBV, it's defined as HBsAg positive with HBV DNA ≥ ULN, for active HCV, it's defined as HCV antibody positive with HCV RNA ≥ ULN, respectively.
12. Subject is pregnant or lactating during the treatment period;
13. History of central nervous system or psychiatric disorders, e.g., epilepsy or dementia;
14. Other severe systemic diseases which might compromise the subject's compliance to the study, e.g., uncontrolled diabetes, gastrointestinal disorders, and renal diseases;
15. Any other situations which are judged by the investigator, would exposure the subject to unnecessary risk, therefore he/she is not eligible.
