In order to improve the utilization rate of graphite solid waste, this paper used graphite mining waste stone as fine aggregate, added spherical graphite tailing and waste stone stone powder with different mass fraction to carry out an experimental study on the formula of electrothermal plate. The influences of graphite mining waste stone replacement and stone powder content on the performance of electrothermal plate were explored. The results show that using 100% (mass fraction) graphite mining waste stone as fine aggregate, the bending strength and compressive strength of cement plate maintained for 28 d are 11.09 MPa and 50.90 MPa, respectively. Although they are slightly lower than the strength index of cement plate using standard sand, but they meet the relevant requirements. This shows that graphite mining waste stone can be used as fine aggregate. When waste stone stone powder content is 7% (mass fraction), the bending strength and compressive strength of electrothermal plate reach up to 6.21 MPa and 33.00 MPa. Although the strength is reduced, it can still meet the requirements of low-strength plate. When spherical graphite tailing content is 9% (mass fraction), the volume resistivity of electrothermal plate is 1.94 Ω·m, and the heating temperature is 71 ℃, which has a good electrothermal effect.