The warning education film "The Long Sound of the Alarm Bell" emphasizes the "ten prohibitions" and "eight hidden dangers" of serious discipline change, selects typical cases of violation of discipline as materials, and adopts a documentary method to reveal profound lessons by restoring the track of these cadres' relaxation of discipline and corruption, as well as the painful costs they have brought to themselves and their families. Through the confession of the officials involved and the reappearance of the case scene, this paper deeply analyzes the great harm brought to the party and government by destroying the election and canvassing and bribing the election.