The Cognitive Assessment and Training System is a comprehensive hardware and software product designed for the assessment and training of brain cognitive functions. It provides intervention training for individuals with brain health maintenance needs, patients with mild cognitive impairment, and those in the early stages of Alzheimer's disease, aiming to enhance cognitive abilities and delay brain decline. The product's content is based on the Cambridge neurocognitive psychology paradigm and includes a set of digital therapy materials for rapid cognitive screening and cognitive training. These materials cover 5 major cognitive dimensions and 27 functional units for comprehensive assessment and training. The system's data center can utilize AI algorithms to create personalized cognitive training plans based on the user's cognitive function assessment results.