Targeting CD19/CD20/CD22 Triple-targeted Cell in Patients With Relapsed/Refractory B-cell Lymphoma

Inclusion Criteria: 1. Subjects have fully understood the possible risks and benefits of participating in this study, are willing to follow and able to complete all trial procedures, and have signed informed consent. 2. Aged 18-75 years (inclusive). 3. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 4. Histologically confirmed B-cell lymphoma that expresses at least one of CD19/CD20/CD22. 5. At least one measurable tumor lesion determined according to Lugano 2014 criteria. 6. Response to prior therapy is consistent with one of the following: 1. Primary refractory: it means that the best response to first-line therapy (at least 2 cycles) is PD, or best response to first-line therapy (at least 4 cycles) is SD but the duration is less than 6 months, which is considered to be PD; 2. Relapsed or refractory after 2 or more lines of therapy. Refractory is defined that best respond to the most recent treatment regimen (at least 2 cycles) is PD, or best response to the most recent treatment regimen (at least 4 cycles) is SD but the duration is less than 6 months, which is considered to be PD; 3. Progression or relapse within 12 months after hematopoietic stem cell transplantation; if salvage therapy is applied after transplantation, the patient must be unresponsive or relapsed to the last line of therapy; 7. Life expectancy≥ 3 months 8. Clinical laboratory values meet screening visit criteria 9. Adequate organ function; Exclusion Criteria: Subject eligible for this study must not meet any of the following criteria: 1. Prior antitumor therapy with insufficient washout period ; 2. Patients who received dual-targeted CAR-T cell therapy (including but not limited to sequential infusion) at any time in the past, or who received CAR-T cell therapy of cameloid origin; 3. With acute or chronic graft-versus-host disease (GvHD); 4. Patients who are positive for any index of hepatitis B surface antigen (HBsAg), hepatitis B virus deoxyribonucleic acid (HBV DNA), hepatitis C antibody (HCV-Ab), hepatitis C virus ribonucleic acid (HCV RNA), or human immunodeficiency virus antibody (HIV- Ab). 5. Known life-threatening allergies, hypersensitivity, or intolerance to LCAR-AIO CAR-T cell or its excipients, including DMSO (refer to Investigator's Brochure). 6. Pregnant or lactating women;