Abstract: Starting with the extraction and refinement of natural fibers, this paper summarizes the research progress of the extraction technology of natural fibers for preparing natural fiber reinforced polymer composites (NFRP). Furthermore, from the chemical composition and structural morphology of vegetable fibers, it also introduces the regulation mechanism of the chemical composition of hemp fiber on fiber mechanics and NFPR mechanical performance. In the end, the paper reviews the research progress at home and abroad of natural fiber surface treatment technology aimed at the improvement of NFPR mechanical properties, so as to provide a related reference.

Key words: natural fiber; composite material; mechanical stability; integration of structure and function