A spatial multispectral linear array CCD remote sensor imaging electrical system comprises a focal plane drive unit, an image processing unit, an image composition unit, and a control unit. The CCD remote sensor in the focal plane drive unit images over the ground, converts an optical signaling of a remote sensing image to an electrical signal according to different spectrum sections, and then sends the electrical signal to the image processing unit. The image processing unit enlarges, filters the electrical signal, and then transmits the electrical signal to the image composition unit after an input level clamping, correlated double sampling and black level removing and A/D conversion are carried out on the electrical signal by the image processing unit; the image composition unit transforms data format on the image signal, converts a parallel signal to a serial signal, transforms data level on a synchronous clock and a bit clock of an output interface transmitted by the serial signal and the control unit, and converts a TTL level to a LVDS level for outputting; the control unit provides a clock control signal for other three units. The system adopts a centralized control method,which can effectively solve the problem that a plurality of spectral coverage and a plurality of units synchronously work.