Automotive driving assistance systems integrate advanced technologies to enhance driving convenience and safety. These systems take sensor technology, data processing algorithms and actuation control technology as the core technical foundations, supporting the coordinated operation of four functional modules: environmental perception, decision-making planning, actuation control and communication networks. This paper outlines the development status and application value of automotive driving assistance systems, sorts out their core technical foundations, and conducts in-depth discussions from two dimensions: functional module design and user experience design. The system not only enhances the active safety performance of vehicles but also optimizes the driving experience, providing strong support for the intelligent transformation of the automotive industry.