The invention relates to a spraying-type loose fiber treatment technology, and belongs to the technical field of loose fiber treatment. Loose fibers to be treated are placed on a treatment net, a plurality groups of rollers are arranged in the treatment net advancing direction, the rollers comprise the upper rollers and the lower rollers, the upper rollers and the lower rollers are arranged over and under the treatment net respectively, the central axes of the upper rollers and the central axes of the lower rollers are staggered, the central axes of the upper rollers penetrate through the lower rollers, the rotating direction of the upper rollers is opposite to that of the lower rollers, and then the loose fiber treatment net is dragged to advance; treatment liquid is sprayed downwards from the position over the upper rollers, and the loose fibers on the treatment net are delivered out after being treated. The spraying-type loose fiber treatment technology is applied to the processes of loose fiber dyeing, color fixing, cleaning, softening and the like and has the advantages of being low in energy consumption, large in treatment quantity, good in treatment effect and the like.