To provide a flow control valve that changes a flow rate according to the magnitude of a load.

The control valve includes: a first spool 3 slidably provided in the interior of a cartridge body 1, and provided on one end surface thereof with a pressure receiving part and on the other end surface thereof with a first spring 4 to control the opening of an inlet 11 by throttling along with an increase in the pressure of a high pressure chamber 71; and a second spool 5 disposed on an outer side of the body 1, having an end surface serving as a pressure receiving surface, and provided on the other end surface with a spring 6 to thereby control the opening of an outlet 12 by throttling along with an increase in the pressure of the high pressure chamber 71. The control valve is therefore allowed to have a function to reduce an amount of oil passing through a flow control valve V along with an increase in the pressure in the high pressure chamber 71.