The invention provides a combined type general supporting moulding bed of ship superstructures. The combined type general supporting moulding bed of the ship superstructures comprises slope components, first horizontal components and second horizontal components, wherein each slope component consists of multiple pedestals of a slope cross beam, which are arranged on the bottom face of the slope cross beam, and at least one slope supporting frame; the multiple pedestals are arranged in sequence from one end of the slope cross beam to the other end, at a gradually-increased distance away from the bottom face of the slope cross beam; the slope supporting frames, higher than the pedestals, are arranged on the other end of the slope cross beam; the first horizontal components and the second horizontal components consist of horizontal cross beams and multiple side-by-side horizontal supporting frames arranged on the bottom face of the horizontal cross beams respectively; moreover, each horizontal supporting frame is at an equal distance to the corresponding horizontal cross beam. The moulding bed is simple in structure, convenience to refit and combine and strong in practicability; the establishment of a moulding bed support on various-series ships for use can be realized; the combined type general supporting moulding bed of the ship superstructures is simple in structure, flexible and convenient to combine and strong in practicability; in addition, the cost can be reduced and the work efficiency can be improved.