To provide a vehicular air-conditioning device which circulates a refrigerant through an evaporator and a subcondenser within a cabin of a vehicle, bypassing a main condenser outside the cabin during a heating operation for dehumidification, and which can carry out recovery of the refrigerant of the main compressor without using a four-way valve during the heating operation.

A refrigerant cycle is composed of a circuit in which a compressor 17, a subcondenser 9, a first solenoid valve 18, a main condenser 19, an expansion valve 22, an evaporator 8 and a compressor 17 are connected together in order during cooling operation, and a circuit in which the main compressor 19 is bypassed during heating operation of dehumidification. A third solenoid valve 26 is provided between the outflow side of the main condenser 29 and the suction side of the compressor 17 so that this valve 26 can be opened during heating operation for dehumidification in which the suction pressure of the compressor 17 becomes lower than the pressure of refrigerant in the main condenser 19.