• Diagnosis of relapsed/refractory T-cell lymphoblastic leukemia or T-cell lymphoblastic lymphoma: Induction therapy failed to achieve a complete remission of minor residual negative; Recurrence: after complete remission, any tumor load in the peripheral blood or bone marrow was 5%, or slightly residual positive, or new extramedullary lesions occurred；

• CD7 expression in tumor cells was detected by flow cytometry；

• Life expectancy greater than 12 weeks；

• KPS or Lansky score≥60;

• HGB≥70g/L (can be transfused);

• 2-70 years old;

• Oxygen saturation of blood#90%#;

• HGB≥70g/L（blood transfusion allowed）;

• Total bilirubin (TBil)≤3 × upper limit normal, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 5×upper limit of normal;

⁃ Informed consent explained to, understood by and signed by patient/ guardian.