Abstract: In this article, we prepared HDPE/bamboo/basalt fiber composites by melting blending method and investigated the influence of bamboo powder and basalt fiber on tensile strength, bend stength, impact strength and heat resitance of HDPE. The results have shown that bamboo powder leads to the decrease in tensile strength and impact strength, but the increase in tensile strength; when basalt fiber was added, the composites show a increase trend in tensile strength and bending strength, also, it improve the toughness. And it is a good reinforcing materials for wood / bamboo and plastic composites（W/BPC）.