The invention provides a process for producing high molecular composite wood-
plastic materials by using straws of agricultural plants, belonging to a process for utilizing the straws of agricultural plants. The process is that the straws of agricultural plants are crushed and dried, then the achieved
straw powder is processed soakage treatment, and then modified
straw powder is achieved after being dried, further
dry powder is achieved by
processing high-speed mixing and cooling mixing to the modified
straw powder and other raw materials of which the plastic is the main material, and then the
dry powder is squeezed out to produce grains, the materials after producing grains are squeezed out and shaped, consequently high molecular composite wood-
plastic materials are manufactured. Owing to the process of the high molecular composite wood-
plastic materials, the sound adhesion between the
plant fibers existed in the straw powder after being processed superficial treatment by a plurality of modifiers, and plastics can be truly realized and the perfect property of materials can be achieved.