The invention provides a concrete sealing curing agent. The concrete sealing curing agent is prepared from a component A and a component B, which are packaged independently, wherein the component A is prepared from the following components in percentage by weight: 20 weight percent to 25 weight percent of sodium silicate, 5 weight percent to 15 weight percent of poly-lithium silicate, 5 weight percent to 15 weight percent of silica sol, 3 weight percent to 7 weight percent of a photocatalyst, 0.5 weight percent to 1 weight percent of a penetrating agent, 0.5 weight percent to 1 weight percent of a surfactant, 0.4 weight percent to 0.6 weight percent of a surface modifier, 0.4 weight percent to 0.6 weight percent of a de-foaming agent and the balance of de-ionized water; the component B is prepared from the following components in percentage by weight: 0.2 weight percent to 0.6 weight percent of graphene, 25 weight percent to 45 weight percent of organic silicon modified water-based epoxy resin, 5 weight percent to 15 weight percent of silica sol, 0.1 weight percent to 2 weight percent of a catalyst, 0.1 weight percent to 3 weight percent of a stabilizer and the balance of de-ionized water. The concrete sealing curing agent provided by the invention has the advantages of reasonable design, high rigidity, high permeability, good wearing resistance and good waterproof performance, and also has a protection effect on concrete.