1. A motion determination apparatus installed in an electronic device, the apparatus comprising: a motion sensor to detect the motion of the electronic device and generate a plurality of motion parameter values corresponding to detect points respectively; a processor for receiving the motion parameter values to generate a first curve and a second curve, wherein the first curve is formed by connecting a plurality of first average values of detected points, and each first average value is generated by averaging the motion parameter values of a first number of detected points detected prior to each detected point, and the second curve is formed by connecting a plurality of second average values of detected points, and each second average value is generated by averaging the motion parameter values of a second number of detected points detected prior to each detected point, and based on a relationship between the first curve and the second curve to trigger a control instruction; and a controller for receiving the instruction to perform a corresponding function.