Graphene aerogels (RGA) were prepared by ice template and two-step hydrothermal reduction through atmospheric drying. The microstructure of RGA was observed by SEM, and the reduction of graphene oxide (GO) was analyzed by XRD, XPS, FTIR and Raman. The electronic universal testing machine was used to carry out the compression spring back experiment on RGA, and the results showed that RGA had excellent compression spring back energy (under 50% strain, after 200 times of compression spring back, RGA could still bounce back to the original height quickly, without significant changes in shape and height). The adsorption performance test of simulated oily waste water showed that RGA tended to adsorption equilibrium after 210 minutes of adsorption, and the adsorption capacity of RGA to emulsified oil in water reached 1466.325 mg·g-1. The adsorption kinetic model of RGA on oily waste water conforms to the quasi-second-order kinetic model. The internal diffusion model showed that the adsorption of oily waste water by RGA was divided into three stages: macropore diffusion on the surface of RGA, mesopore diffusion and micropore diffusion. The cyclic adsorption results showed that RGA had excellent cyclic adsorption performance on oily waste water (the adsorption capacity of the cyclic adsorption of 15 times was kept between 1400 and 1450 mg·g-1). The adsorption results of the actual sewage show that the removal rate of the actual sewage by RGA can reach more than 90%, and can be recycled.