The work aims to prepare high performance long bamboo fiber bundle/polypropylene composite with rich bamboo and polypropylene (PP) in China, explore the effects of bamboo pretreatment and molding process on the physical and mechanical properties of the composite and broaden the application of bamboo material. The bamboo strips were softened and devillicated through pretreatment with alkali liquor. Then, the extracted bamboo was composed with polypropylene through hot pressing. The optimal parameters were obtained by adjusting the hot pressing process. After pretreatment with 6% sodium hydroxide at 100 ℃ for 2.5 h and decompression by roller, LBF was prepared. The tensile strength of LBF reached 397.2 MPa. After pretreatment, the energy storage modulus of LBF/PP composite was 9.49 GPa, which was 11.5% higher than that of the untreated LBF/PP composite. The optimum hot pressing process was determined as follows:temperature 190 ℃, time 20 min, pressure 6 MPa. With the increase of bamboo fiber content, the water resistance of LBF/PP composite was decreased. LBF/PP composites prepared with long bamboo fiber bundles have excellent physical and mechanical properties, and are expected to be used as structural materials for containers and pallets, and have a good prospect in packaging application.