Abstract: In recent years, with the gradual increase in car ownership, many highways have reached saturation, unable to meet the increasing demand for traffic volume, and there are a large number of disease problems. The poor combination of pavement layers will seriously affect the quality of the project. Relying on a highway reconstruction and expansion project, this article focuses on the construction techniques of spraying modified emulsified asphalt adhesive layer materials between asphalt pavement layers in order to provide references for related projects.