Abstract: According to the properties of extract oil featured by high pour point and high aromatic content, a solvent dewaxing method with dewaxing aid for the extract oil was developed to produce environmental friendly aromatic rubber extender oils. Filtration rate and wax cake thickness in extract oil dewaxing process can be improved and controlled for the addition of dewaxing aid so that the dewaxing process can be continuously conducted. The dewaxed oil can then be solvent extracted to obtain rubber extender oil. The contents of PCA, B(a)P and PAHs in produced extender oils satisfied with the requirement of Directive 2005/69/EC of the European Parliament and of the Council. Results of rubber filling oil test show that the performance of the oil extended rubber is good, no oil bead and can meet the superior grade specifications of SBR 1723.