The invention discloses an unmanned plane flight data on-line collection method. The unmanned plane flight data on-line collection method comprises following steps: S1, unmanned plane flight data is collected; S2, flight information is calculated based on the unmanned plane flight data collected in S1; S3, the flight information obtained in S2 is sent to a remote controller; S4, the flight information is received by the remote controller; S5, data obtained in S4 is subjected to integrated processing and is stored; and S6, the data processed in S5 is sent to a server. The unmanned plane flight data on-line collection method is high in efficiency; data collection and transmission workload is small; transmission stability is high; the flight data obtained via calculating is high in accuracy. The invention also discloses an unmanned plane using the unmanned plane flight data on-line collection method, and the unmanned plane is provided with a wireless communication module.