Elevation processing method and device

The invention provides an elevation processing method and device, and relates to the field of data processing. The accuracy of statistical elevation cumulative ascending values and cumulative declinevalues can be improved. The method comprises the steps that the current overall state of a GPS trajectory is determined based on the reference elevation of the current trajectory point on the GPS trajectory and the latest elevation extreme value on the GPS trajectory; the current local state of the GPS trajectory is determined according to the elevation of the current trajectory point and the reference elevation; if the overall state is overall ascending, the local state is local decline, and the current local decline height of the GPS trajectory is greater than or equal to a preset elevationjitter threshold, the difference between the reference elevation and the latest elevation minimum value on the GPS trajectory is accumulated to the elevation cumulative ascending values; and if the overall state is overall dec