A multi-touch detecting method is adapted for detecting locations of touched points on a touch panel including first and second conductive films (113, 123), and includes following steps. Measuring points of the first conductive film distributed along X-axis of a Cartesian plane are scanned, and x-components (X 1 , X 2 , X 3 ) are determined accordingly. Measuring points of the second conductive film distributed along Y-axis of the Cartesian plane are scanned, and y-components are determined accordingly (Y 1 , Y 2 , Y 3 ). A first voltage is applied to the first conductive film, and a second voltage is applied to at least one of the second measuring points with the location on the Y-axis adjacent to or overlapping one of the y-components. Voltages at the first measuring points with the locations on the X-axis adjacent to or overlapping the x-components are measured sequentially and one of the y-components and one of the x-components are outputted.