The invention discloses a pump body shell production line. The pump body shell production line comprises the production procedures of shape milling and grinding, stepped hole boring and milling, bearing hole machining, water mouth lathing, overflow hole drilling, installation hole drilling, bolt platform drilling and milling and water seal platform finish lathing and further comprises a material feeding line, a chain plate line and a transfer robot, wherein the shape milling and grinding further comprises milling and grinding detection, and the stepped hole boring and milling are performed through delivery of the material feeding line after the milling and grinding detection; and between the stepped hole boring and milling and the material feeding line, a first module actuator performs detection with a detection device, and meanwhile, pump body shells are transferred. By means of the pump body shell production line, automation machining production of the pump body shells is realized, meanwhile, automatic detection can be performed, and staying between working procedures and working procedure errors appearing in working procedure transfer connection are avoided; and by means of programmed operations, the uncertainty of manual operations is reduced, meanwhile, the efficiency is improved, high-quality operations and detection are realized, and the market competitiveness is improved.