The invention relates to a ladder management system based on stride frequency trigger. The ladder management system comprises a pressure detecting device arranged each footboard of a ladder and used for detecting whether pressure on the corresponding footboard exceeds the maximum borne pressure or not and sending out a pressure alarm signal when the pressure on the corresponding footboard exceedsthe maximum borne pressure, and a stride frequency detecting device arranged on the ladder and including a speech identification chip, a microcontroller and a data output interface, wherein the speechidentification chip is used for detecting footboard sound, produced by a person treading on the footboards, in sound nearby the ladder and outputting the time of each time of footboard sound, and themicrocontroller is used for determining the time consumed by each footboard based on the time difference of every two adjacent footboard sounds and determining average footboard treading time based on the time consumed by the footboards. By adopting the ladder management system, self-adaptive adjustment of footboard separation distances of the ladder is achieved based on the age of a current user.