Abstract: By adding three different kinds of plasticizer into the maltodextrin microcapsule wall material respectively, a comprehensive study had been done to analyze the nature, property and usage amount of these three kinds of plasticizer.When this were added into the microcapsules wall material of Xizang ghee, the results showed that the plasticizer with collagen as its major component achieved the optimal performance.The relatively appropriate dosage was 16%.When this kind of plasticizer was added into the maltodextrin microcapsule wall material of Xizang ghee, the particle surface of the microcapsule of Xizang ghee product was smoother and the particle shape was better than the microcapsule of Xizang ghee product been produced by using traditional formula.