Disclosed is a rubber metal composite journal box spring, comprising a core shaft, a rubber piece and a pedestal. The upper part and the lower part of the rubber piece are vulcanized and integrated respectively with the core shaft and the pedestal. The rubber-metal composite journal spring is a spherical journal spring and the rubber piece is in the shape of the combination of a sphere and a column; wherein the lower part of the rubber piece resembles a sphere and the side face of the rubber piece resembles a column, and the spherical part and the columnar part are smoothly connected. The core shaft is also in the shape of the combination of a sphere and a column, which matches the internal face of the rubber piece; the lower part of the core shaft is spherical and the side face of the core shaft is columnar, and the spherical part and the columnar part are in smoothly connected. The internal hole of the pedestal is in the shape of the combination of a column and a sphere, which matches the external spherical face and the columnar part of the rubber piece, and the bottom of the internal hole of the pedestal is spherical and the side face of the internal hole is columnar. The core shaft and the pedestal are made of light aluminium alloy. Elastic absorption of vibration is taken by the spherical rubber piece which is integrally vulcanized with the light aluminium alloy component parts.