The invention discloses a segmental molding making method of an end socket. The method comprises the following steps: step 1, making a segmental plate mould; step 2, making single material plate and vertical material plates and checking; step 3, gluing kraft paper to the surfaces of material pieces for protection, polishing the working surface of the segmental plate mould and wiping clean; step 4, carrying out compression molding; step 5, after cutting, trimming; step 6, beveling, trimming after welding, scribing and cutting; step 7, assembling, clamping, brushing a paint, and assembling a top circle; step 8, leveling, determining height, and drawing an end opening cutting line; step 9, cutting the end surface of the top circle, cutting segment small openings according to the actual size of the end surface of the top circle, and then assembling segments; step 10, after finishing all assembly in the step 9, leveling the end surface, determining the height, and drawing an end opening cutting line; step 11, cutting an end opening, and examining the whole; and step 12, packaging and loading onto a vehicle. The number of the split segments is reduced, the utilizing rate of materials is increased, the length of weld joints is reduced, the manufacturing cycle is short, and actual use requirements are met.