A smooth black gel as pre-polymer was prepared at room temperature by mixing Waste tire rubber (WTR), butyl acrylate (nBA), and an appropriate amount of BPO. And WTR/PBA oil-absorbing materials could be formed under further reaction of the pre-polymer with cross-linker DVB. The structure and property of the pre-polymer were studied by FT-IR, and the saturated oil absorption of the oil-absorbing materials in gasoline was measured and the compatibility of WTR/PBA oil absorbing materials was investigated by dynamic mechanical analysis (DMA) and scanning electronic microscope (SEM). The results showed that the BPO could cause the reaction of nBA at room temperature in the existence of WTR, resulting in the formation of the gel. The oligomer of butyl acrylate was detected, as well as parts of butyl acrylate grafted onto WTR. The conversion of the monomer was between 10% and 20%. The test results of rheological properties of the pre-polymer showed that the gel belonged to a Bingham fluid. The saturated oil absorption of the WTR/PBA oil-absorbing materials increased first and then decreased with increasing the amount of crosslinking agent, the maximum amount of the absorped gasoline was 6.2 g/g at the dosage of 1% crosslinking agent, and the adsorption reaction reached balance after 60 min. The DMA and SEM measurements showed that the compatibility of the WTR/PBA oil-absorbing materials was excellent.