The invention discloses a multifunctional dyed yarn spinning technology. The multifunctional dyed yarn spinning technology includes the steps of: (1) functional treating of cotton fibers; (2) alkali-resistance finishing of viscose fibers; (3) opening and cleaning; (4) cotton carding; (5) drawing; (6) vortex blending. Compared with the prior art, the multifunctional dyed yarn spinning technology has the advantages that through functional treating of the cotton fibers, original properties of the cotton fibers are kept, and dyeing property and flexibility of the cotton fibers are improved; through alkali-resistance finishing of the viscose fibers, the viscose fibers are enabled to resist erosion of strong alkali and have the advantages of breathability, comfort, softness, handiness, easinessin washing and the like; blended yarn obtained from blending of the functional cotton fibers, the alkali-resistant viscose fibers and tencel fibers has advantages of the three and is uniform in dyeing, high in dyeing efficiency, soft to feel and excellent in moisture absorption and release.