The invention discloses a double-liquid grouting system used for cement and a water glass solution and a construction process of the double-liquid grouting system. The system comprises a pipe A (1), a pipe B (2) and a pipe C (8); the pipe A (1) is a sleeve valve pipe used for injecting cement slurry, the pipe B (2) is used for injecting water glass, and the pipe C (8) is used for injecting housing material slurry; the pipe A (1) is provided with multiple sets of pipe A slurry discharging holes (4) according to stratum conditions, and each set of pipe A slurry discharging holes (4) is wrapped by a pipe A rubber sleeve (5); the pipe B (2) is provided with multiple sets of pipe B slurry discharging holes (6) according to stratum conditions, and each set of pipe B slurry discharging holes (6) is wrapped by a pipe B rubber sleeve (3); the pipe A (1) and the pipe B (2) are bound together through binding belts (7). By means of the double-liquid grouting system, under the composite stratum condition of water-rich sand gravels and clay, holes can be effectively formed, and the pipe blocking phenomenon in a traditional double-liquid grouting process is effectively avoided; different modes can be adopted for grouting according to sand gravel and clay stratums, and practice shows that the process has a good grouting effect.