The present invention relates to the bispecific antibody including an antigen-binding field, it is tied to the TRAILR2 of PSMA and a fragment of an antigen-binding field or the antibody One nucleic acid of the base sequence including encoding said antibody or the antibody fragment A recombinant vector including the nucleic acid Body strain is converted including the recombinant vector A method of for generating the bispecific antibody or the antibody fragment by using the conversion body strain A kind of detection/measurement reagent including the bispecific antibody or the antibody fragment, a diagnostic agent and a curative drug.