The invention discloses a method and device for raising the trigger speed and the locking force of a speed locking device. The device comprises an applicable main body consisting of a fixed body and a sliding body, an induction device consisting of the speed locking device, a safety device, an executing device which is in linkage with the induction device, and a locking device provided with mutually locked tooth blocks. The method comprises the following steps: the fixed body and the sliding body of the applicable main body generate relative displacement under the shaking of a building; the induction device perceives the relative moving speed of the applicable main body; when the shaking is so large that the moving speed exceeds a set value, the induction device breaks the safety device and provides initial trigger driving force to push the executing device to execute mechanical locking; the executing device relieves the suppression on the locking device, the tooth blocks of the locking device are meshed, and the mechanical self-locking of the locking device in the relative slippage direction of the applicable main body is realized. The device disclosed by the invention has the advantages of being simple and reliable, being high in applicability, being high in trigger locking speed, being great in locking force, and being lower in production cost.