The invention discloses a method for detecting image touch points, which comprises the following steps: (1) converting an original image shot by infrared camera into a grey-scale image and storing the grey-scale image; (2) performing the obfuscation of the grey-scale image in the step (1); (3) subtracting the grey-scale image subjected to the obfuscation in the step (2) from the grey-scale image in the step (1); (4) subjecting an image obtained after the subtraction in the step (3) to de-noising; and (5) subjecting an image obtained after the de-noising in the step (4) to binaryzation to obtain a final touch point image. The invention also provides a device for detecting image touch points, which comprises an image conversion unit, an image removal unit and an image processing unit. The method and the device can effectively eliminate the interference of non-touch points in the image such as a palm shape, precisely detect the touch points in the image and improve positioning precision. Meanwhile, the method and the device have the advantages of simple calculation, high processing speed and the like.