The invention discloses a cell surface exhibition PET decomposing enzyme reorganizable pichia pastoris and structure and application, comprising the structured steps of 1, chemo synthesizing the nucleotide sequence of ameliorated PET decomposing enzyme as shown in SEQ ID No. 1; cloning the nucleotide sequence of anchoring protein gene from the gene group of GS115 pichia pastoris; 2, utilizing the OverlapPCR to connect the nucleotide sequence of anchoring protein gene and the nucleotide sequence of ameliorated PET decomposing enzyme and obtaining an amalgamation sequence; 3, connecting the amalgamation sequence to an expression load of pichia pastoris, and obtaining a reorganizable expression load; 4, transferring the reorganizable expression load in a host pichia pastoris, and obtaining a reorganizable pichia pastoris of a cell surface exhibition PET decomposing enzyme. The reorganizable pichia pastoris can anchor the PET decomposing enzyme to the cell surface, the enzyme after Immobilization can be used for an entire cell catalyst, compared to the wild grow type, has high stability, is convenient to recover, easy to control and can be repeatedly utilized.