The invention discloses a high-performance fiber-based all-polymer composite plate and production method thereof, and belongs to the field of the material science. The method comprises the following steps: closely stacking high-stretched oriented polymer fibers (or strips) layer by layer according to a certain cross angle, arranging a single-layer copolymer film between layers, and performing hotpressing molding to obtain the high-performance fiber-based all-polymer composite plate; or the method comprises the following steps: directly closely stacking polylactic acid fibers having a skin-core structure, and performing hot pressing molding to obtain the high-performance fiber-based all-polymer composite plate. The fiber-based all-polymer composite plate has the advantages of simple production process, excellent performances and realization of recycling, so the reduction of the production cost of the high-performance fiber-based all-polymer composite plate is facilitated, and the application field of the composite plate is widened.