An air conditioner with a water suction curtain is mainly composed of a shell 1, a draught fan, an evaporator and a controller. The draught fan and the evaporator are correspondingly arranged in the shell. An air inlet is formed in a back board. When the draught fan works, air flow is sucked in through the air inlet, the air flow exchanges heat when flowing through the evaporator, and after being refrigerated or heated, the air flow enters to the draught fan to be pressurized and then is blown out through an air outlet formed in the front wall or the side wall. The draught fan and the evaporator are connected with the controller through wires respectively. The air conditioner further comprises a humidifier. The humidifier is installed in the middle of the air conditioner with the water suction curtain. Condensed water generated in the work process of the evaporator above the humidifier directly flows into a water tank of the humidifier and is used for humidification. When water in the water tank is sufficient, manual water supplementing operation is performed, air is humidified through a humidification method that the air flow penetrates the water suction curtain and takes moisture away, energy consumption is lower, humidification time is longer, the structure is simpler, and cost is relatively lower.