An image scanning device comprising a Contact Image Sensor, CIS, the image scanning device comprising two CISs, the first CIS being parallel with an X direction of the image scanning device, the second CIS being parallel with a Y direction of the image scanning device, the first CIS being pulled by a first pulling mechanism, the second CIS being pulled by a second pulling mechanism, the image scanning device further comprising a control system, a post-processing system and an original pattern table, wherein the control system is configured to control normal working of the first CIS and the second CIS, and configured to control actions of the first pulling mechanism and the second pulling mechanism; and the post-processing system is configured to process signals transmitted by the first CIS and the second CIS, and the original pattern table is configured to place an original pattern; wherein the Contact Image Sensor comprises a light source, a lens, a light-sensing portion receiving light converged by the lens, a sensor substrate carrying photosensitive Integrated Circuits, IC, arranged linearly, a frame accommodating the lens and the sensor substrate, and a light-transmitting plate provided on an upper part of the frame, wherein the CIS further comprises a linear: Fresnel magnifying lens, the linear: Fresnel magnifying lens being provided between the light-transmitting plate and the lens, and the linear Fresnel magnifying lens having a characteristic of linearly magnifying an object in a single direction; wherein: light emitted from the light source is irradiated to the original pattern through the original pattern table, light reflected by the original pattern enters the linear Fresnel magnifying lens via the original pattern table, is magnified, enters the lens, and then is converged to the light-sensing portion by the lens, and these light signals are converted into electric signals to be output to the post-processing system for subsequent processing; under the control of the control system, the first pulling mechanism pulls the first CIS to move forward in the Y direction at a step of a/N, every time the first CIS X1 moves forward for N steps, a row of pixel points of the original pattern can be scanned, and the light-sensing portion collects N rows of pixel points, after scanning is completed, a group of data in the Y direction can be obtained; the second pulling mechanism is utilized to pull the second CIS to perform scanning in the X direction, and a group of data in the X direction can be obtained; a is a length of a pixel point to be magnified via the linear magnifying lens in the X direction or the Y direction; the two groups of data are combined into a complete image via the post-processing system. light emitted from the light source is irradiated to the original pattern through the original pattern table, light reflected by the original pattern enters the linear Fresnel magnifying lens via the original pattern table, is magnified, enters the lens, and then is converged to the light-sensing portion by the lens, and these light signals are converted into electric signals to be output to the post-processing system for subsequent processing; under the control of the control system, the first pulling mechanism pulls the first CIS to move forward in the Y direction at a step of a/N, every time the first CIS X1 moves forward for N steps, a row of pixel points of the original pattern can be scanned, and the light-sensing portion collects N rows of pixel points, after scanning is completed, a group of data in the Y direction can be obtained; the second pulling mechanism is utilized to pull the second CIS to perform scanning in the X direction, and a group of data in the X direction can be obtained; a is a length of a pixel point to be magnified via the linear magnifying lens in the X direction or the Y direction; the two groups of data are combined into a complete image via the post-processing system.