The mineral compositions of Hetain jade,Manasi green jade and Xiuyan old jade have been investigated by means of electron microprobe.Based on the analyses, it can be determined that the major mineral composition of Hetain jade and Manasi green jade is tremolite and actinolite respectively, whereas Xiuyan old jade is composed of both tremolite and actinolite.The locality feature of Hetain jade, Manasi green jade and Xiuyan old jade have been discussed.