The invention discloses an intermediate tank filler for treating rubber wastewater. The intermediate tank filler comprises a filler body, wherein a filler body tip A and a filler body tip B are arranged at the two ends of the filler body respectively and are made from polytetrafluoroethylene materials; and filler body side wall baffles are connected between the filler body tip A and the filler body tip B and are made from carbon fiber materials. The intermediate tank filler for treating rubber wastewater has the beneficial effects that the rubber wastewater treatment efficiency is improved by 2-3 times, the effluent quality is stable and reliable, and the sewage treatment expense cost is reduced.