Satellite-ground communication method and device

The invention discloses a satellite-ground communication method and device, and the method comprises the steps that a first ground terminal receives a downlink broadcast and television signal transmitted by a satellite at a preset first frequency resource and an uplink broadcast and television signal transmitted to the satellite at a preset second frequency resource, and the preset first frequencyresource has a value range of (5925 MHz, 6752 MHz); wherein the value range of the preset second frequency resource is (3400 MHz, 4200 MHz); and the first ground terminal receives a downlink communication signal sent by the satellite or the base station at the preset second frequency resource and an uplink communication signal sent to the satellite or the base station at the preset second frequency resource by using a frequency dual multiplexing strategy. The technical problem of competitive interference between the satellite television broadcast transmission service and the ground 5G communication service signal in