Plant growth regulator（PGRs）, which was most widely used in our country, has played an importantrole in regulating crop growth, increasing cereals yield, improving crop quality and enhancing crops resistance. Inthis paper, combined with scientific research and production practice, the advanced progress and mechanism of ‘ori-ented control’and disaster relief in cereals production were comprehensively analyzed and summarized, and pros-pecting of future development direction was made in the meantime.