Fecha de publicación: 02/06/2020 Fuente: Wipo "IOT" The embodiment of the invention provides a detection device for an NB-IoT terminal. In the detection device, an NB-IoT test terminal and an NB-IoT test base station are connected with a microcomputercontroller; when the installed NB-IoT fault terminal is detected, the microcomputer controller measures the network coverage signal intensity of the installation position of the installed NB-IoT faultterminal through the NB-IoT test terminal with the communication function; a signal transmitted by the NB-IoT test base station is guided to an installation position; whether an NB-IoT test base station receives a random access request message of an installed NB-IoT fault terminal or not is detected through a microcomputer controller to obtain a detection result, and a fault reason of the installed NB-IoT fault terminal is determined according to the obtained network coverage signal strength and the detection result. Viaa the detection device disclosed in the embodiment of the invention, a network fault problem and a terminal fault problem are distinguished, and maintenance difficulty is reduced.