The present invention relates to a sprayed loose fiber treatment process and relates to the technical field of loose fiber treatment. Loose fibers to be treated are placed on a treating mesh. Several sets of rollers are provided in the direction in which the treating mesh travels. The rollers comprise upper rollers and lower rollers. The upper rollers and the lower rollers respectively are arranged above and below the treating mesh. The central axis lines of the upper rollers and the central axis lines of the lower rollers are staggered correspondingly. The central axis lines of the upper rollers run through the corresponding lower rollers. The upper rollers and the lower rollers move in opposite directions, thus dragging the loose fibers to travel with the treating mesh. A treating liquid is sprayed downwards over the upper rollers; the loose fibers on the treating mesh is treated and then sent out. The application of the invention to loose fiber dyeing, dye setting, cleaning, and softening processes provides the advantages of low energy consumption, large treatment volume, and great treatment effects.