In order to meet future emission regulations and standards, relevant technologies for the reduction of NOx and particulate emissions using in-house purification methods, as well as on-camera and off-board collaborative purification control technologies were studied; the integrated control system for DOC+DPF+SCR system for diesel exhaust emission post-treatment was studied (SCR Urea control strategy, DPF regeneration control strategy and system control method); Research on key catalytic materials for post-disposal of high-performance diesel vehicles, focusing on the selective catalytic reduction of nitrogen oxides (molecular sieve catalyst materials) for diesel vehicles, particulate trapping of diesel vehicles, and Passively regenerated catalytic oxidation materials, large size carriers, and key materials for DPF carriers.