This invention relates to a convenient scan device with a positioning sensor and a process method for getting images including a case, a circuit image sensor (CIS), also a system processor P3 controlling the said CIS by time sequence signals, a photoelectric coordinate sensor calculating coordinate increments 8001 and 8002 of real time shift and a shift processor P1, P2 and an A/D circuit and data buffer memory. Said p3 utilizes the said memory to bundle the original scan data 8004 with positioned information to be transferred to the upper unit, the image process module in the unit unties the packet and figures out coordinate of CIS terminal point pixel to package image lines in the target image packaged zone and utilize the statistic character of part pixel data of the secondary scan strap laminated zone to compute the related offset volume of its position coordinate and correct it.