The study is regard the microcapsule of the type of W/O, and the principle that oil wrap aqueous to experiment, regarding SM ass the membrane, water-soluble color is for the core, BPO is for the initiative agent, aqueous solution of PVA is for the live of interface agent, in the text we study every kind the term of wrap, for example, increase the quantity of PVA solution, change the blend speed, and its release system, etc., but proceed with the that the interface come together the particle of the method to wrap. Through the experiment adds a little amount, the tiny aqua of capsule of the income is not easy asunder, but put the aspect of in release system, and the capsule is more small in its release system is more bad; whereas, than good.