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When a flight test for civil aircraft is going on, it is required to transmit a large amount of test data. Because of the high requirements of the test subjects, the test mission needs to be carried out in many places at the same time. For such demand, a flight test telemetry monitoring technology architecture for civil aircraft based on 4G communication is presented in this paper, and a kind of multi-ground flight test integration test network is constructed. The technology architecture has passed the flight test data transmission test , which can meet the test aircraft test flight data transmission requirements, and Meet the test data transmission needs. The application of the technology to enhance the ability of security monitoring, and improves the flight test efficiency.