The invention discloses a
step counting method and device and a
wrist type
pedometer. The method comprises steps as follows: triaxial acceleration data of a current sampling point in a certain period of time is acquired and idle state judgment is performed; if a user is in the idle state, a search mode is started; if the user is in the non-idle state,
resultant acceleration of the triaxial acceleration data is calculated; whether the current sampling point is a possible
step counting point is judged according to the
resultant acceleration, if the current sampling point is not the possible
step counting point, triaxial acceleration data of a new sampling point is acquired continuously, if the current sampling point is the possible step counting point, whether the
current mode is a step counting mode is judged, and if the
current mode is the step counting mode, step counting is performed; if the
current mode is the search mode, possible step counting points are cached, the cached possible step counting points are subjected to true pace
verification, if the possible step counting points are true paces, the current mode is switched into the step counting mode, and step counting is performed; if the possible step counting points are not true paces, the current mode is switched into the search mode. Accurate step counting can be realized through repeated
verification.