To provide an improved petroleum-derived aromatic rubber-containing oil with performances on the level similar to those of conventional aromatic rubber-containing oils that does not contain carcinogenic polycyclic aromatic compounds.

This petroleum-derived aromatic rubber-containing oil has polycyclic aromatic compounds in an amount reduced to <3 wt.%, and the dynamic viscosity at 40°C and the carbon content as measured by the chemical composition analysis according to ASTM D2140, regulated to satisfy the following equation (1): V≥-33.3C+1200(1). In the equation, V is the dynamic viscosity (mm2/s)of the rubber-containing oil at 40°C, and C is the content of the aromatic carbon (mass%) of the rubber-containing oil according to ASTM D2140. This oil has performances on the level similar to those of conventional rubber-containing oils and is safe as a non-carcinogenic material. This oil is suitable for many rubber products, including tires.