The invention provides an image scanning apparatus stabilizing a behavior of a document in scanning an image and enabling to promote image scanning accuracy. The image scanning apparatus according to the invention includes a resist roller 22 for feeding a document, a discharge roller 28 disposed in a feeding direction of the resist roller 22 for feeding the document and a first optical carriage A for scanning the image of the document in feeding the document by the resist roller 22 and the discharge roller 28. The resist roller 22 and the discharge roller 28 are respectively driven by a first motor 150 and a second motor 160. Further, when the document is charged to the discharge roller 28, document feed speed of the resist roller 22 in scanning document is made to be increased.