A destination floor registration device of an elevator, comprising: a microphone for voice input installed in a hall of an elevator; a sensor for detecting the presence of a passenger present in a prescribed range in the vicinity of the microphone; voice comparison means arranged to identify a destination floor of the passenger on the basis of a voice signal inputted from the microphone while the sensor is detecting the presence of the passenger; holding means arranged to hold information on a destination floor identified by the voice comparison means while the sensor is detecting the presence of the passenger and thereafter output the held information on a destination floor to a controller of the elevator when the sensor ceases to detect the presence of the passenger; a notification device installed in the hall; characterised by further comprising measurement means arranged to measure the period of time during which the sensor continues to detect the presence of the passenger, and cause the notification device to notify a prescribed guidance to prompt the passenger to move away from the microphone when the measured period of time exceeds a prescribed threshold value, wherein the notification device comprises: an indicator installed in the hall; and a speaker installed in the hall, the measurement means being arranged to cause the indicator to indicate a prescribed guidance when the measured period of time has exceeded a prescribed first threshold value, and cause the speaker to provide a prescribed voice guidance when the measured period of time has exceeded a prescribed second threshold value which is a value larger than the first threshold value, and the destination floor registration device further comprises adjustment means arranged to cause the holding means to forcedly output held information on a destination floor to the controller when the measured period of time measured by the measurement means has exceeded a prescribed third threshold value which is a value larger than the second threshold value. a microphone for voice input installed in a hall of an elevator; a sensor for detecting the presence of a passenger present in a prescribed range in the vicinity of the microphone; voice comparison means arranged to identify a destination floor of the passenger on the basis of a voice signal inputted from the microphone while the sensor is detecting the presence of the passenger; holding means arranged to hold information on a destination floor identified by the voice comparison means while the sensor is detecting the presence of the passenger and thereafter output the held information on a destination floor to a controller of the elevator when the sensor ceases to detect the presence of the passenger; a notification device installed in the hall; characterised by further comprising measurement means arranged to measure the period of time during which the sensor continues to detect the presence of the passenger, and cause the notification device to notify a prescribed guidance to prompt the passenger to move away from the microphone when the measured period of time exceeds a prescribed threshold value, wherein the notification device comprises: an indicator installed in the hall; and a speaker installed in the hall, the measurement means being arranged to cause the indicator to indicate a prescribed guidance when the measured period of time has exceeded a prescribed first threshold value, and cause the speaker to provide a prescribed voice guidance when the measured period of time has exceeded a prescribed second threshold value which is a value larger than the first threshold value, and an indicator installed in the hall; and a speaker installed in the hall, the measurement means being arranged to cause the indicator to indicate a prescribed guidance when the measured period of time has exceeded a prescribed first threshold value, and cause the speaker to provide a prescribed voice guidance when the measured period of time has exceeded a prescribed second threshold value which is a value larger than the first threshold value, and the destination floor registration device further comprises adjustment means arranged to cause the holding means to forcedly output held information on a destination floor to the controller when the measured period of time measured by the measurement means has exceeded a prescribed third threshold value which is a value larger than the second threshold value.