A new type of panda fiber grating coupler is proposed,which has the characteristics of fiber grating and fiber coupler, especially the capability of maintaining polarization. Fabrication technics is performed and three panda fiber grating couplers are successfully fabricated. Experimental research indicates that the polarization extinction ratio does not decrease after grating writing. The experiments of optical add multiplexing(OAM) and optical drop multipplexing(ODM) are carried out and the results show that the light with center wavelength 1536.6 nm can be add and drop multiplexing by this new device.