From a tumor-reactive T cell or active anti-tumor T-cell antigens, the appropriate target sequence is introduced to modify T cells to target a broad range of tumors with improved specificity. With engineering TCR construction and a series of assay, such as transgene expression, TCR/CD3 stability, lymphocyte antigen reactivity and cytotoxicity, animal experiments, etc., we provide cGMP-compliant TCR products for preclinical and clinical trials.