A capacity control valve (1) includes a valve main body (10) having a first communication passage (11), a second communication passage (12), a third communication passage (13), and a main valve seat (15a), a valve element (20) having an intermediate communication passage (29), a main valve portion (21c), and an auxiliary valve portion (23d), a solenoid (30) that drives a rod (36) having an auxiliary valve seat (26c), and a first biasing member (43) that biases in the valve closing direction of the main valve portion (21c). A spring constant of the first biasing member (43) has a characteristic that the spring constant is increased in an opened state of the main valve portion (21c) and decreased in a closed state. The capacity control valve can efficiently discharge a liquid coolant and lower drive force of a compressor at a liquid coolant discharging operation.