In order to explore the storage and preservation effect of atmospheric plasma on cold fresh pork,effect of air,nitrogen and argon discharge plasma treatment on the quality and sanitation levels of cold fresh pork was investigated,including variations of quality indicators such as sensory evaluation,Red value,total number of colonies,volatile base nitrogen (TVB-N).The results showed that different discharge gas treatment enhanced the sensory evaluation and red value of pork.The total number of bacterial colonies and TVB-N test showed that gliding arc discharge treatment could prolong the storage life of pork,among which argon treatment was the best,and nitrogen and air discharge treatment promoted the fat oxidation of cold fresh pork,as consistent with the morphology results of plasma treated samples.These results showed that effect of atmospheric plasma treatment depends on the type of discharge gas species.Based on the index situation of comprehensive fresh-keeping quality,argon discharge plasma showed its owning advantages in improving water retention and sensory performance while reducing microorganisms on the surface of cold fresh pork,which would provide a new treatment method for the storage and preservation of cold fresh pork.