The invention discloses a track smoothing method and apparatus for a capacitive whiteboard. A numerical value D used for defining a certain dynamic region on a screen is set in the system initially, and the following steps are further implemented: (1) a newly-added point coordinate of a certain track is obtained by sampling; (2) the last track coordinate point of the track is read from a storage structure; if the newly-added coordinate point is the first point of the track, the storage structure is established, and the point coordinate is stored and the coordinate value is taken as the smoothened track coordinate; (3) the track point number n in a fixed region formed by the D and the last track coordinate point is calculated; and (4) the track coordinate of the newly-added point is calculated based on the point number n participated in the moving average value calculation of the newly-added point, the corresponding point coordinate and the newly-added point coordinate obtained in the step (1) according to a moving average value formula. Therefore, relatively high calculation efficiency for the track smoothening of the capacitive whiteboard can be realized.