UCAR T-cell Therapy Targeting CD19/ BCMA(QT-019C) in Patients With Relapse/ Refractory Autoimmune Diseases

Inclusion Criteria: * 1\. Age ≥ 18 years old (inclusive), regardless of gender. 2. Adequate hepatic, renal and bone marrow function.3 Participants with relapsed or refractory autoimmune diseases, Including SLE or IM. Exclusion Criteria: * 1\. Participants with a history of severe drug allergies or allergic constitutions.2. Presence or suspicion of uncontrolled or treatment-required fungal, bacterial, viral, or other infections.3. Participants with insufficient cardiac function.4. Participants with congenital immunoglobulin deficiencies.5. History of malignancy within five years.