Biodegradable or green composites are attracting more and more attention due to their ability to replace traditional composites and their environmental friendliness. Green composites based on polylactic acid (PLA)and pineapple leaf fiber (PALF) mats have been developed. A mechanical process was used to rapidly extract PALF from fresh leaves, with low environmental impact and high fiber yield. morphology, traction etc. The study focused on mechanical tests, specifically tensile, impact, flex and water absorption tests. Experimental modeling was performed using different ratios of coco and polylactic acid. The fibers were cut to a predetermined length of 3mm and attached to PLA. A compression molding machine is used to apply pressure and heat, which puts more stress on the fiber. The optimal ratio was determined from the analysis results of the pineapple fiber mat in combination with 100% polylactic acid.