Fecha de publicación: 02/08/2019 Fuente: Wipo "IOT" The embodiment of the invention provides a pseudo base station judgment method and device. The method comprises the steps that when an NB-IoT terminal detects a cell signal under a new base station, the NB-IoT terminal judges whether a cell under the new base station meets a first preset condition or not; if yes, the NB-IoT terminal is accessed to a cell under the new base station; when the NB-IoTterminal is accessed completely, the NB-IoT terminal judges whether a resident cell meets a second preset condition or not; if not, the NB-IoT terminal communicates with an IoT service platform through the new base station; whether the NB-IoT terminal is successfully communicated with the IoT service platform through the resident cell is detected; and if not, it is judged that the new base station is a pseudo base station. According to the embodiment of the invention, the judgment of the NB-IoT terminal on the authenticity of the new base station is realized, the security of the NB-IoT terminal is improved, and the security problem of an Internet of Things system caused by a pseudo base station is solved.