An environmentally-friendly plastic material and manufacturing method thereof. The environmentally-friendly plastic material consists of the following components provided in the respective mass fractions: 15-17 parts of magnesium hypophosphite; 15-25 parts of modified starch; 6-8 parts of melamine cyanurate; 6-8 parts of a white carbon black; 6-8 parts of barium ferrite magnetic powder; 4-6 parts of a filler master batch; 10-12 parts of toluene diisocyanate; 10-20 parts of paraffin wax; 5-15 parts of vetch and stalk powder; and 1-3 parts of a coupling agent. The environmentally-friendly plastic achieves good malleability, light-weight products, zero environmental pollution, and reduced costs.