The invention discloses a method for automatically positioning the coordinate of the scene in a real-time video. The method comprises the steps that S1, PTZ (pan / tilt / zoom) parameters are acquired; S2, the coordinate of a video displaying area is determined, the scene needing to be acquired serves as a reference substance and manually calibrated, and the coordinate of the reference substance is acquired; S3, the step A and the step B are conducted simultaneously according to the acquired PTZ parameters, in specific, A, the matching relation of PTZ operation conducted on a ballhead camera or aPTZ camera and the scene coordinate in the screen is calculated, and the scene coordinate in the screen video is determined, marked and stored; and B, the matching relation of PTZ operation conductedon the ballhead camera or the PTZ camera and the screen coordinate is calculated, and the real-time video displaying area in the screen is determined; and S4, the scene coordinate in the screen videois marked and displayed. The method achieves the video structuralizing of the scene position I the real-time video; is convenient for conducting rapid searching on the scene position in massive videos; and only conducts processing on the coordinate data, occupies less hardware sources, is convenient for processing of massive videos, is not affected by the image quality and the light conditions, and the precision is high.