The invention relates to a recombined bamboo sectional material with the arbitrary length and a manufacturing method thereof. The manufacturing method comprises the steps of (a) weaving, drying and gum dipping of bamboo curtains, (b) continuous winding for blank pre-assembly, (c) guide forming for blank assembly, (d) die pressing for blank making, and (e) heating solidifying. An existing cold-pressing recombined bamboo technology is improved, the recombined bamboo material with the arbitrary length can be obtained, when the recombined bamboo material is used as a building structure material, the outturn percentage can be increased, automatic continuous production is improved, and the production efficiency is improved. The manufactured recombined bamboo can be used for beam columns and other materials for building structures and is not limited to other overall used materials.