Due to its biocompatibility and biodegradability, gamma - the study of the PGA can be used as drug carrier, gamma PGA and drug molecules can improve the drug molecules soluble, make it close to the tumor site and with the gamma PGA the degradation of macromolecular released slowly, at the same time, gamma PGA can also be used for trauma healing medicines and hemostatic agents used in surgery, in addition has the study also found that gamma PGA can also be used for liver tissue engineering scaffold material, adsorption and cell proliferation