The invention discloses an arc-shaped multi-cavity shell part stamping die. The stamping die comprises an upper die and a lower die. The upper die and the lower die are detachably located in an upper die base and a lower die base correspondingly. The upper die and the lower die are connected through heavy-duty springs. The four corners of the upper die base and the four corners of the lower die base are provided with guide posts. The parts, between the junction surfaces of the upper die and the lower die, of the guide posts are sleeved with cylindrical springs and supporting seat tubes from interior to exterior. The cylindrical springs extend out of the upper end faces of the supporting seat tubes in a natural state. The bottom of the lower die base is located at the opening end of a stamping supporting platform. Hydraulic rods are arranged in the stamping supporting platform. Kidney-shaped ejector rods and cylindrical ejector rods are fixedly connected to the output shaft ends of the hydraulic rods. The kidney-shaped ejector rods and the cylindrical ejector rods can be driven by the hydraulic rods to penetrate through kidney-shaped through holes and circular through holes. By adopting the arc-shaped multi-cavity shell part stamping die, one-time stamping forming of parts can be realized, the forming precision and strength of the parts are high, and the pore defect is avoided.