Novel bamboo-plastic composite material

The invention relates to a preparation method of a novel bamboo-plastic composite material, in particular to a bamboo-plastic composite material which has excellent mechanical property and is prepared by the step of adding reinforcing material bamboo powder (or bamboo fabric), a flexibilizer and other assistants to polypropylene used as a substrate resin, wherein the bamboo-plastic composite material comprises the following components in parts by mass: 40-100 parts of polypropylene, 40-100 parts of bamboo powder or bamboo fabric, 3-15 parts of compatilizer, 3-15 parts of flexibilizer, 0-5 parts of coupling agent, 0.5-8 parts of lubricant, 0-15 parts of nucleator and 0-8 parts of other assistants. According to the invention, by selecting proper types and proportions of flexibilizer, compatilizer and other assistants, the defect that the impact strength of the composite material is reduced greatly due to the addition of fiber is overcome.