The invention relates to the field of biobased materials, and in particular, relates to a production method of a biobased mycelial shaving board. With a brand-new biological method, cork wood, hard miscellaneous wood and cotton wood are naturally grown and molded with biological mycelia in proportion and then are hot-pressed into the shaving board. The production process is free of glue and formaldehyde. The shaving board prepared by the method not only has the quality of the board improved, but also achieves good effects of conservation, environmental friendliness, integration of resources and recycling economy.