With the rapid development of technology in Unmanned Aerial Vehicles Ground Control Station (UAV GCS), the ergonomic assessment of UAV GCS becomes important and urgent, which could not only alleviate the workload of the UAV operator, but also avoid flight accident. The research presented in this paper analyses characters of ergonomic evaluations of Unmanned Aerial Vehicles Ground Control Station(UAV GCS), and borrows ideas from method for ergonomic assessment of piloted aircraft. The Delphi method is used to build the evaluation indexes for UAV GCS, and the expert questionnaire for ergonomic evaluation of UAV GCS is established, in the end the method and contend of ergonomic evaluations is also presented, which could be used as the guidance for ergonomic integration evaluations of UAV GCS.