Abstract: In order to realize the large-area controllable preparation and high performance of graphene-based three-dimensional aerogels under mild environmental conditions, hydrazine hydrate is used as reducing agent in this paper. Through low-temperature pre-frozen combined with natural drying at room temperature, large-area three-dimensional reduced graphene oxide (3D-RGO) aerogels with a diameter of 30 cm can be prepared effectively and controlled. The method has mild preparation conditions and does not need any heating conditions or special freeze-drying equipment. By controlling the reduction time, pre-frozen time, pre-frozen temperature and reaction vessel during the preparation of 3D-RGO aerogel, the shape, surface wettability, volume shrinkage aerogel can be effectively adjusted to achieve controllable preparation of 3D-RGO aerogel. The 3D-RGO aerogel has no obvious volume shrinkage and structural cracks. The aerogels exhibit a stable honeycomb-like structure with a stable pore size of about 500 μm and a low density of 3.8 mg/cm³, and it can quickly undergo a compression strain of 90% and return to the initial state. The volume shrinkage rate of the aerogels is <5% in the drying process. At the same time, the graphene aerogel exhibits good and stable conductivity. When the compressive strain increases from 0% to 90%, its conductivity increases from 17.3 S/m to 115.2 S/m. This method is suitable for the cost-effective preparation of large-area graphene aerogels.