The urgent and growing importance of recycling polyethylene terephthalate (PET) plastic waste in modern society cannot be overstated. To address this issue sustainably, biodegradable methods for PET plastic recycling have gained considerable attention. These methods involve utilizing enzymes derived from microorganisms to catalyze PET hydrolysis. In this study, we successfully employed recombinant protein techniques to express and purify PETase enzyme. The optimal conditions for PETase expression were determined to be a 4-hour and 30-minute induction at 30 oC using IPTG concentration of 0.01 mM. Upon purification, the PETase enzyme exhibited efficient degradation of PET film, displaying optimized activity when supplemented with 10 % glycerol and 1 mM DTT. These findings lay the groundwork for future research endeavors pertaining to the production of PET cleavage enzymes and the exploration of recombinant proteins for plastic waste recycling in Vietnam.