The invention discloses a wide-width image scanning 
system and a realization method thereof, and solves problems that existing wide-width image scanning systems are low in 
data processing speed and complex in structure. The wide-width image scanning 
system comprises an upper computer, a 
USB3.0 controller of which the 
model number is EZ-USBFX3 and is bi-directionally connected with the upper computer, a CPU and an electric erasable and programmable read-only memory which are bi-directionally connected with the 
USB3.0 controller, and at least two CIS analog front ends which are arranged side by side. Each CIS 
analog front end comprises a CIS 
light source drive module which is connected with the CPU, a CIS sensor which is connected with the CIS 
light source drive module, and an analog-to-
digital converter of which the input end is connected with the output end of the CIS sensor and the output end is connected with the input end of the CPU. The wide-width image scanning 
system is simple in structure and convenient to realize so that the wide-width image scanning system has characteristics of being large in 
data processing amount and high in 
processing speed, and thus the wide-width image scanning system is suitable for popularization and application.