The invention discloses an antibacterial deodorizing cashmere composite fiber containing chitin fiber, which is prepared from following raw materials, by weight, 24-28 parts of Australian wool, 20-24 parts of black yakwool fibers, 15-18 parts of nandina fiber, 17-19 parts of the chitin fiber, 8-12 parts of polyethylene fiber, 16-19 parts of apocynum venetum fibers, 9-13 parts of short acrylic fibers, 5-7 parts of wool lubricating oil, 3-6 parts of morpholine, 6-8 parts of alkylphenol ethoxylates, 2-4 parts of carbon nano tubes, 0.03-0.06 parts of nano silver fibers, 3-4 parts of mica powder, 0.4-0.8 parts of silicon carbonate, 0.5-0.8 parts of sodium cocoate, 3-5 parts of dandelion, 2-3 parts of folium eucalypti, 85-105 parts of 1-ethyl-3-methylimidazole acetate, 100-110 parts of 1-allyl-3-methylimidazole chloride, 20-27 parts of additives and a proper amount of water. The cashmere product is soft and gentle in handfeel, is stimulation-free, is high in heat preservation and has an antibacterial and deodorizing function.