In order to improve the road performance of ordinary emulsified asphalt mixture， a new kind of composite material， waterborne epoxy emulsified asphalt， was obtained by organically combining emulsified asphalt and waterborne epoxy resin. The effects of the amount of waterborne epoxy resin on the mechanical strength， water stability and temperature stability of the mixture were studied by experiments. The results showed that the initial strength， late strength and high temperature stability of the mixture increased with the increase of the amount of water-based epoxy resin， but the water stability and low temperature stability increased first and then decreased with the increase of the amount of water-based epoxy resin. The best improvement effect was achieved when the amount of water-based epoxy resin was 10%and 15%，respectively. In practical engineering application， the dosage of waterborne epoxy resin is controlled between 10%and 15%.