The invention provides an IOT satellite broadcast data obtaining method and device, wherein the IOT satellite broadcast data obtaining method comprises the steps of: according to a received broadcastsignal, performing radio-frequency processing and analog-to-digital conversion processing on the broadcast signal, so that a broadcast signal data packet is obtained; demodulating the guidance segmentof the broadcast signal by utilizing a pre-stored guidance code, so that demodulated guidance segment data is obtained; synchronizing the guidance segment data, so that the satellite number is obtained, and querying a corresponding information code according to the satellite number; then, demodulating the broadcast signal data packet by utilizing the information code, so that broadcast segment data is obtained; and, synchronizing the broadcast segment data, so that information included in the broadcast segment data is obtained. By means of the technical scheme in the invention, the calculation amount of obtaining the broadcast signal by a ground terminal is easily reduced; the response rate of obtaining the broadcast signal by the ground terminal is increased; the synchronization accuracyof the data of the ground terminal and the satellite data in an IOT system is improved; and the data synchronization delay of the ground terminal is reduced.