The utility model relates to a cold-hot water mixing valve with a balanced valve, which is respectively provided with sealing pits on the dent upper surface of a mixing valve box footwall and on the undersurface of a balanced valve bonnet plate along a water inlet, a water outlet and the periphery of the upper and the lower seat pits of the balanced valve with appropriate distance. The balanced valves are sealed and sheathed between the two sealing pits. The cold-hot water mixing valve with a balanced valve is also provided with the sealing pits on the upper surface of the balanced valve bonnet plate and the bottom surface of a fixed disc along the periphery of the water inlet with appropriate distance. The disc is sealed and sheathed between the two seal pits, and the depth of the sealing pit is shorter than the radius of the cross section of the coil of an obturating ring.