A fluid control valve device for a hot water combination faucet is provided with: a cylindrical valve body (20) disposed inside a main body (10) so as to be movable in the axial direction; a temperature-sensing spring (30), which is disposed inside said cylindrical valve body (20) and is for biasing the cylindrical valve body (20) in the direction for increasing the amount of opening of the waterinlet (2); and a spring-receiving part (21), which is integrally connected to the cylindrical valve body (20) and is for supporting the free end of the temperature-sensing spring (30). Additionally, one end of the main body (10) is configured as a mixing chamber provided on the mixed water outlet (24) end for mixing hot water with water and discharging same, and the other end has an adjustment screw member (34) provided on the upper end of the main body (10) so as to allow adjustment of screw engagement, and a valve shaft (32) disposed so as to pass through the main body (10) and the cylindrical valve body (20). One end of said valve shaft (32) is connected and fixed to the spring-receiving part (21) and the other end is elastically connected and supported in the adjustment screw member (34).