Auxiliary anode composite material and preparation method thereof

The invention provides an auxiliary anode composite material and a preparation method thereof. The auxiliary anode composite material comprises at least a CFRP sheet and an alkali-activated cementing material, wherein the CFRP sheet is included in the alkali-activated cementing material; and the alkali-activated cementing material is prepared by mixing industrial waste residue and alkali activator. When being applied to a concrete reinforcement structure, the auxiliary anode composite material can achieve a concrete structure reinforcing effect, and can also have an obvious protection effect on reinforcement corrosion in the concrete; and the auxiliary anode provided by the invention also has the advantages of convenient installation, large coverage area and uniform current distribution.