The invention discloses a method for testing an error of the initial imaging moment of a satellite remote sensing camera. The error of an initial imaging moment of the camera is calculated from an obtained image by controlling the satellite camera to shoot a light source of a second pulse response lamp. The method disclosed by the invention is applied to camera imaging tests of a certain remote sensing satellite to complete the task of testing the error of the initial imaging moment of the camera under a whole satellite condition. According to the successful development of the method, the problem of satellite and ground control time sequence arrangement of the satellite is solved, and the corresponding ground control instruction sending moment correction is performed by testing the calculated error of the initial imaging moment of the camera under the whole satellite condition, thereby well solving the problem of time space correspondence between image information shot by the satellite and a ground object corresponding to the moment that a instruction is sent, and the reference is provided for follow-up models.