The invention discloses a vertical compression type biomass composite continuous production system. The vertical compression type biomass composite continuous production system comprises a first molten film forming device and a fiber material conveying device. The first molten film forming device comprises a first molten film forming machine and a first forming roller, wherein the first forming roller is arranged below the first molten film forming machine. The fiber material conveying device comprises a conveyor, a second forming roller and a third forming roller, wherein the conveyor, the second forming roller and the third forming roller are arranged in sequence from top to bottom. A conveying channel is formed by the surface of the first forming roller and the surface of the second forming roller and arranged for preliminarily press-fitting on a fiber material and a first molten film. The second forming roller and the third forming roller rotate in a matched manner and are arrangedfor secondarily press-fitting the fiber material and the first molten film into an integral whole. By means of the vertical compression type biomass composite continuous production system, the problems that long fiber materials generated in the composite production process after fibers and plastic are mixed absorb water easily and are likely to be intertwined, so that uniform and stale conveyingis difficult to achieve, and thus defects that surface quality of products is poor, and mechanical performance is not uniform are caused are effectively solved; and production efficiency of a verticalcompression type biomass composite is improved, and the vertical compression type biomass composite can be easy to process.