Unity support poseDeformer or blendshape??

I make poseDeformer and blendshape(face emotion) in MAYA can I use them in Unity

No, Unity supports bone animation only.

FYI, given just how many high priority feature requests are being implemented in Unity 3.0 (yea!) this request may be up for consideration for the next round of development.

Take a look on their UserVoice site and vote it up if you care about it.

There are plenty of Morphing/Blendshape systems in the asset store

Unity 4.3 now supports blendshapes, and we released a faceshift plugin for unity yesterday, so now you can even easily animate those blendshapes: http://www.faceshift.com/unity/