Abstract:Amyloid-β (Aβ) is a key factor in the onset and development of the Alzheimer‘s disease (AD), and the abnormal cleavage of amyloid precursor protein (APP) attributes to the overproduction of Aβ. Therefore, the factors resulting in uncontrollable expression of APP gene or abnormal processing of this protein play an important role in the pathogenesis of AD. Most of studies have focused on AD treatment by reducing the level of generated Aβ rather than by suppressing Aβ generation. This article summarizes the factors affecting Aβ generation and the mechanism on APP gene regulation in order to provide more theoretical basis in AD treatment.