The invention discloses an electrification self-detection method of an AMT (Automatic Mechanical Transmission) control system gear selecting and shifting executing mechanism. After a whole vehicle is electrified, according to current and position change of a shift fork, whether self detection is passed or not is judged through failure detection on a gear shifting position sensor and electrification of a gear shifting motor and a gear selecting motor; when self detection is passed and is not passed, prompting is performed; and after self detection is not passed or is finished, duty ratio output of the motors is stopped, so that electrification self-detection of the AMT automatic transmission gear selecting and shifting executing mechanism is finished, and the safety of a system is guaranteed.