Heavy oil component content in low light, high asphaltene and resin content, less straight-chain hydrocarbon content, leading to most of the heavy oil has a high viscosity and high density characteristics, mining and transportation is difficult. At present, heavy oil recovery process at home and abroad with a heating method commonly used method of viscosity reduction, mixing light oil law, heavy oil viscosity reduction and chemical viscosity reduction method. Emulsified heavy oil viscosity reducer when steam flooding, is a relatively new heavy oil recovery technology, emulsifying viscosity reducer main component is a surfactant,