Fecha de publicación: 29/07/2022 Fuente: Wipo "IOT" The invention provides a network access method, an NB-IoT chip, an NB-IoT terminal and a computer storage medium, the network access method is applied to the NB-IoT chip, the NB-IoT chip obtains i frequency points through frequency sweeping operation, i is greater than or equal to 1, and the network access method comprises the following steps: according to signal feature data of a service cell under the j-th frequency point in the i frequency points, determining the j-th frequency point in the i frequency points, serving cells searched under the jth frequency point are screened to obtain candidate access cells, j is larger than or equal to 1 and smaller than or equal to i, and the signal characteristic data comprise at least one of RSRP and SINR; the NB-IoT chip demodulates the system message and the RRC message of the candidate access cell under the jth frequency point; and if the NB-IoT chip successfully demodulates the system message and the RRC message of the at least one candidate access cell under the jth frequency point, the NB-IoT chip accesses the candidate access cell of which the system message is successfully demodulated under the jth frequency point, so that the success rate of the network access process is ensured, the network access time delay is reduced, and the power consumption of the NB-IoT chip or the NB-IoT terminal is saved.