The invention relates to a train-ground wireless message delay detection method. The train running speed is introduced into a calculation factor in the method. The method comprises the steps of: (1),when an effective train-ground wireless message is received every time, recording the train-ground timestamp and the train speed provided in the train-ground message, and creating a wireless message timestamp list and a train running speed list based on a receiving sequence; (2), obtaining the timestamp of a CTCS when the train-ground wireless message is received; (3), when a new train-ground wireless message is received every time, performing operation of the delay time based on the created wireless message timestamp list and the train running speed list, so that the final message delay timeparameter delta Tdelay is obtained; and (4), judging whether the delta Tdelay is beyond a set delay time parameter threshold value or not, and if so, processing according to a failure backward safetymethod. Compared with the prior art, the method disclosed by the invention has the advantages that: the train running speed is introduced into the calculation factor; whether the train-ground wirelessmessage is delayed or not when the train running speed is beyond 200 km/h can be detected, etc.