The invention discloses a forming die for manufacturing a computer shell, and relates to the technical field of computer manufacturing. The forming die comprises a forming bottom frame, a concave die plate is arranged above the forming bottom frame, a forming convex die is arranged above the concave die plate, a sprue mechanism is arranged in the middle of the top of the forming convex die, a limiting mounting groove is formed in the middle of the forming bottom frame, a limiting spiral groove is formed in the middle of the interior of the limiting mounting groove, a material shaking assembly is arranged in the position, located on the outer side of the limiting spiral groove, of the interior of the limiting mounting groove, material ejecting assemblies are evenly arranged on the periphery of the interior of the concave die plate, a movable sliding block is fixedly connected to the position, located on the outer side of a driving spiral rod, of the bottom end of the exterior of the concave die plate, and matching assemblies are evenly and fixedly connected to the surface of the outer surface area of the movable sliding block. According to the forming die for manufacturing the computer shell, the fluidity of materials inside a die cavity is improved, the imaging defect phenomenon is avoided, and the material injection efficiency is improved.