Abstract: Highway engineering is an important basic construction project in my country, which can promote regional economic development and ensure the convenience of people's travel. In the construction of highway engineering, if the rationality of foundation construction cannot be effectively ensured, construction will be hindered, which will not only cause traffic accidents in highway engineering construction, but also cause bad social impacts, which will affect my country's economic progress and society. Harmony is extremely disadvantageous. In foundation construction, soft soil foundation is the key content in the construction. Since the water content of soft soil foundation is relatively large, if it cannot be effectively treated, it will affect the stability and safety of the foundation structure. Therefore, it is necessary in the construction of soft soil foundation. Pay more attention to the implementation of scientific method selection. This article mainly analyzes the soft soil foundation treatment of highway engineering, for reference only