Water-borne high permeability crystal waterproof hardening agent

The invention discloses a water-borne high permeability crystal waterproof hardening agent. The proof hardening agent comprises the following components in percent by weight: 20 to 40 percent of alkali metal silicate, 0.25 to 1 percent of an early strength agent, 1 to 6 percent of a catalyst, 0 to 0.5 percent of a surfactant, 1 to 4 percent of a hardening accelerator, 0.5 to 2 percent of water soluble high molecular polymer, 0 to 8 percent of organic silicon, and water for the surplus. The waterproof hardening agent is moderate in cost, can realize complete localization, higher in penetration depth, higher in hardness after being reacted with substance in concrete, and higher in hydraulic pressure resistance capacity.