The invention relates to a touch point detection method for a touch pad, which is suitable to accurately detect a plurality of touch points on the touch pad. The touch point detection method for the touch pad comprises the following steps: the touch pad is periodically scanned; when the touch pad is scanned and a first touch point is detected for the very first time, coordinate values of the first touch point in the first dimension direction and the second dimension direction are recorded; the touch pad is continuously scanned after the very first time; and after the very first time, when a plurality of newly increased possible touch points are detected for the very second time, the position of a second contact point is judged from a plurality of the newly increased possible touch points according to the coordinate values of the first touch point in the first dimension direction and the second dimension direction. The touch point detection method for the touch pad can realize detection of a plurality of contact points the number of which is two or more than two.