The invention discloses a cooling coil pipe and heating coil pipe parallel energy saving type air treatment unit, and belongs to the technical field of air treatment devices. An air conditioner machine room, a draught fan and a unit box are included. The draught fan and the unit box are arranged in the air conditioner machine room. An air supply port is formed in one side of the air conditioner machine room, one end of the draught fan stretches out of the air supply port, and the other end of the draught fan communicates with the unit box. The other side of the air conditioner machine room isprovided with a fresh air inlet and a return air inlet. A heating assembly, a fresh air assembly, a refrigeration assembly and a negative ion generation device are arranged on the side wall of the unit box. A humidifier is further arranged between the heating assembly and the unit box. According to the provided cooling coil pipe and heating coil pipe parallel energy saving type air treatment unit,corresponding air valves can be opened according to needs, air independently passes through the corresponding assemblies, so that air resistance in the unit is reduced, the conveying power of the draught fan is reduced, and energy consumption is reduced.