The invention provides a fiber strengthening complex material which is produced by adopting bamboo blasting pulp fiber as strengthening material, employing nylon, ABS and polypropylene as matrix, combining unqiue impingine and drying technology and adding wax type carboxylation polyether interface modifier synthesized through a thermal catalysis method in matrix resin. The invention processes various bamboo main stems into bamboo stripe (sheet) fiber and bamboo shoot tail materials into powder materials, which are used for strengthening thermosetting and thermoplastic plastics such as nylon, ABS, polypropylene, etc., thereby light, high and strong, energy saving and cheap strengthening complex material with high performance is produced and various boards, tubes, boxes, barrels, tanks, containers, profiles, bars and moulding products can be made of the strengthening complex materials. The invention is characterized by light weight and low price and has the advantages of relative small shrinkage and torsion of materials, high stabile dimension, good processing property, low abrasion to production equipment, etc.; besides, the invention can be used in industries such as automobiles, appliances, construction materials, interior decoration, etc. and is used for replacing the complex materials in early age such as similar glass fiber reinforced plastics, etc. Compared with the existing complex materials, the invention has remarkable advantages of wide sources of raw materials, low cost, easy processing and excellent performance. The bamboo fiber used in the invention can employ a large quantity of overstock bamboo materials in China, thus relieving the present shortage of timber, steel and plastic raw materials.