With the rapid devolopment of the study of Mycoplasma, the researchers in the world have more interest in Mycoplasma gallisepticum , especially in the putative cycadsorption of Mycoplasma gallisepticum .In terms of some associated references, Here we discuss the biochemical characters and genomic analysis of Mycoplasma gallisepticum membrane protein, MGC 1,MGC 2,and GapA.,moreover explain in greater detail its immunological escaping mechanism and acting as diagnosis probe.