The invention discloses a high-aromatic hydrocarbon environmental-friendly rubber oil and a preparation method thereof. The preparation method comprises the following steps of: (1) carrying out hydroprocessing on naphthenic base reduced-pressure distillate oil to obtain solvent preprocessing oil; (2) diluting the solvent preprocessing oil by using a diluting solvent, then refining through a solvent to obtain extraction liquid at the bottom of a refining tower, and recovering the solvent to obtain extraction oil; and (3) hydroprocessing the extraction oil, then distilling, and then collecting distillates being higher than 380 DEG C, namely the high-aromatic hydrocarbon environmental-friendly rubber oil. The high-aromatic hydrocarbon environmental-friendly rubber oil disclosed by the invention is high in additional value, thereby greatly enhancing the integral economic benefit of naphthenic base distillate oil.