Bamboo powder-reinforced polyethylene (PE) composite was created as an ecologically acceptable engineering material, and its mechanical properties were evaluated. The composite material was compatibleized with maleic anhydride-grafted polyethylene (MAPE) to increase bamboo powder-polyethylene matrix adherence. Everywhere, HDPE items are in high demand. Bamboo powder and glass fiber composite manufacture is under green technology development. They are also low-density, highly specialized, eco-friendly, and inexpensive. The matrix for this experiment is high-density polyethylene combined with bamboo powder and glass fiber. Each sample was compressed molded. After pretreatment, samples' mechanical characteristics were characterized. Bamboo powder, glass fiber, and polymer mass ratios were considered for making specimens. Flexural and compressive testing shows that adding bamboo powder and glass fiber improves mechanical characteristics. The findings suggest that BP/GF/HDPE polymer composites might be employed for stress-bearing sheets, films, and pipes.