The invention provides a recombinant chimeric antigen receptor (CAR) gene, a vector containing the same, a CAR-T cell and a use thereof. The recombinant CAR gene comprises a nucleic acid sequence encoding an antigen-binding portion of a CD30 antibody, a transmembrane portion and a CD137 cytoplasmic functional region and a CD3zeta cytoplasmic functional region linked in any order; also provides a method of treating Hodgkin's lymphoma or anaplastic large cell lymphoma or other CD30-positive tumors using the CAR-T cells of the invention.