The invention provides an input detection method, wherein when multiple touch points are input a touch sensor 30 detects touch points 41, 42 individually. The detection method includes: scanning a first electrode line, and if a plurality of touch areas 43, 45 sandwiching a non-touch area 44 are detected, labeling the plurality of touch areas 43, 45 sequentially; determining the location of the non-touch area as a separation area in the case where the non-touch area between the labels is within a predetermined spacing; when a second electrode line next to the first electrode line where a separation area is detected is scanned, handling the area on the second electrode line corresponding to the separation area on the first electrode line as a separation area; and practicing the above steps for every electrode line and detecting the labels.