The invention provides an olfactory detection device for a medical ENT (ear, nose and throat) department. The olfactory detection device comprises an olfactory detection box, a detection liquid spraycover structure, a cleaning tube structure, a test liquid clamping frame structure, a nasal cavity cleaning pot structure, an olfactory detection tube structure, an alcohol bottle, a vinegar bottle, awater bottle, a support, a hanging hook, a washing tray, a conduit, a control panel, a storage plate, a waste liquid tank, a waste liquid pipe, supporting legs and vertical frames, wherein the detection liquid spray cover structure is in bolted connection with the upper surface of the support; the cleaning tube structure is in bolted connection with the left side of the upper surface of the storage plate. Through arrangement of a spray sheet and a spray pump, atomization of reagents for detection is facilitated, so that olfactory detection is facilitated; through arrangement of a cleaning pump, a cleaning tube and a cleaning nozzle, cleaning of an olfactory detection tube is facilitated, so that doping of the reagents with different smells is prevented from affecting the accuracy of the detection; through arrangement of a cleaning pot and a nose cleaning head, cleaning of a nasal cavity before the detection is facilitated, so that effective olfactory detection is guaranteed.