A linear track scanning imaging system and method, the imaging system comprising: a ray generating unit comprising a plurality of ray sources, where the plurality of ray sources emit beams alternately and only one ray source emits a beam at a same time; an actuating means for causing an object under examination to perform a relative movement with respect to the linear track scanning system along a linear track, thereby leading the object under examination to pass through the scanning area of the linear track scanning imaging system; a data collecting unit which collects the projection data of the object under examination for each ray source respectively; an imaging unit which reconstructs an image of the object under examination based on the projection data collected for each ray source; and a display unit for displaying the reconstructed image. By adopting a plurality of ray sources arranged according to a certain spatial distribution and emitting beams alternately according to a certain time sequence, it is
