• With their own consent and have signed an informed consent form, willing and able to comply with the planned visits, study treatment, laboratory tests and other experimental procedures; Patients with recurrent/refractory malignant hematologic tumors as determined by clinical diagnosis; Age 18 years and above, both male and female; Subjects with a physical status of 0\

• 2 on the Eastern Cooperative Oncology Group (ECOG) score; Expected survival \>3 months from the date of informed consent; HGB ≥ 60g/L (transfusion is allowed); Liver and kidney function, cardiopulmonary function meet the following requirements: a) creatinine ≤1.5×ULN;b) Left ventricular ejection fraction ≥50%; c) Blood oxygen saturation \>90%;d) Total bilirubin ≤ 1.5 × ULN; ALT and AST ≤ 2.5 × ULN; Subjects with pregnancy plans must agree to use contraception prior to enrollment in the study and after the study has lasted for six months; subjects should notify the investigator immediately if they become pregnant or suspect pregnancy.

• Subjects in the different cohorts will still be required to fulfill the following conditions:

• Lymphoma Cohort:

• B-cell lymphoma Diagnosis of CD19+ and/or CD20+ and/or CD22+ and/or BAFF+ B-cell lymphoma confirmed by pathology and histology; Inert B-cell lymphoma (CLL, FL, MZL, LPL, HCL); Aggressive B-cell lymphoma (DLBCL, BL, MCL).

• Meet the following criteria for relapsed or refractory B-cell lymphoma (meet 1 of the first 2 plus 3 below):

• Less than 50% tumor shrinkage or disease progression after 4 courses of standard regimen regulated chemotherapy; relapse after achieving CR after standard regimen chemotherapy; subjects must have received adequate prior therapy, including at least: Anti-CD20 monoclonal antibody; Anthracycline-containing combination chemotherapy. T-cell lymphoma

• Diagnosis of CD7+ refractory/relapsed T-lymphocyte lymphoma confirmed by pathology and histology, meeting any of the following criteria:

• Relapsed: Disease relapse determined after having previously received at least two standardized treatment regimens to achieve complete remission, or disease relapse after having undergone stem cell transplantation to achieve complete remission; Refractory: previous treatment with at least two regimens and failure to achieve complete remission after the last treatment, or failure to achieve remission or disease progression after stem cell transplantation.

• II Acute lymphoblastic leukemia cohort:

• Acute B-lymphoblastic leukemia Refractory/relapsed B-lymphoblastic leukemia diagnosed as CD19+ and/or CD20+ and/or CD22+ and/or BAFF+ confirmed by immunohistochemistry or flow cytometry.

• Refractory/relapsed B-lymphoblastic leukemia (meeting 1 of the following 4 criteria is sufficient):

• Relapse within 6 months of first remission; first refractory without achieving complete remission with 2 cycles of standard chemotherapy regimen; failure to achieve complete remission or relapse after first or multiple lines of salvage chemotherapy; those who are not suitable for HSCT, or who have abandoned HSCT due to medical constraints, or those who have relapsed after HSCT.

• Acute T-lymphoblastic leukemia

• Diagnosis of CD7+ refractory/relapsed T-ALL/LBL confirmed by immunohistochemistry or flow cytometry, meeting any of the following criteria:

• No CR after standard chemotherapy; CR after first treatment, but CR lasted less than 12 months; No CR after first or more remedial therapy; Relapse two or more times.

• III. multiple myeloma cohort:

• Positive expression of BCMA and/or CD19 and/or GPRC5D in myeloma cells by flow or immunohistochemistry; Patients with relapsed/refractory multiple myeloma who have received at least 1 prior therapy (including proteasome inhibitors (PIs) and immunomodulatory drugs (IMiDs)) or are resistant to proteasome inhibitors and/or immunomodulatory agents.

• IV. myeloid tumor cohort:

• Positive tumor cell antigen test results (CD7 and/or CD19 and/or CD47) confirmed by immunohistochemistry or flow cytometry; Diagnosis of myeloid tumors, including but not limited to AML and MDS, confirmed by pathology and the patient meets the following

• Relapse or refractory requirements:

• Relapse: reappearance of leukemic cells in the peripheral blood, or \>5% of primitive cells found in the bone marrow, or extramedullary relapse after second-line or higher salvage therapy to achieve CR/CRi; Refractory: failure to achieve CR/CRi after at least 2 cycles of standard chemotherapy.