Urea formaldehyde/epoxy resin microcapsule prepared by in situ polymerization method for self healing of cementitious matrix crack has good sphericity, and rough morphology, which is beneficial to tightly bond to cementitious matrix. Using MC120D and tetraethylene pentamine(TEPA) as curing agents for epoxy resin E 51, butyl glycidyl ether（BGE） as diluent, the curing kinetics of the healing system was studied according to Kissinger equation and Crane equation. The proportion of MC120D and BGE is 20.0%(by mass), 17.5%(by mass) respectively was determined according to activation energy and reaction order of curing reaction. High toughness PVA fiber reinforced mortar with the microcapsule and the curing agents added was prepared and the factors influencing self healing efficiency was investigated.