Plant growth promoters are a type of growth regulator that can promote plant cell division, differentiation and elongation growth, or promote the growth of plant vegetative organs and the development of reproductive organs. These regulators have a positive impact on plant growth through different mechanisms of action. This is the most diverse and widely used type of plant growth regulator.Common plant growth promoters include:Auxin, ‌Gibberellin, ‌Cytokinin, DA-6, ‌Sodium Nitrophenolate, ‌Brassinolide, ‌Forchlorfenuron, etc. These plant growth promoters effectively promote plant growth and development through different mechanisms of action, and improve crop yield and quality.