Abstract: Disclosed is a process for producing biomass fiber molding material, and relates to the technical field of biological fibers. In the present disclosure, pretreated dried leaf fibers are softened by being subjected to a soaking process; the leaf fibers are grounded through a high-concentration grinder to obtain primary pulp of biomass fiber molding material; and then excess water is removed from the primary pulp of biomass fiber molding material through a pulp squeezing thickener to obtain the biomass fiber molding material. The primary pulp of biomass fiber molding material obtained by the production process of the present disclosure meets the specification for manufacturing safe paper, water is recycled in the production process to reduce water resource consumption; and the adding of auxiliary agents is reduced, which can reduce the cleaning of the product and improve the utilization rate of the leaf fibers.