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The feature of army training for Olympic security protection:① The flight zone is an urban area where population and building are dense,so the training would be difficult due to the complex surroundings.② The training height for helicopter is low,and the landing area is incommodious,with blocks surrounded.③ Its hard to observe due to the disorder light,meanwhile its hard to distinguish the direction and speed of wind in night-training.④ The isolate and cliff landing location will produce an optical illusion during the training of roof-landing and roof-taking off on a city building while decelerated by eye.⑤ All aircrew need close-cooperation in the training of city tracing the external observation will be prior and internal added.The visual influence by lamplight and luminosity should be considered while exceeding or evading in night-training.