By inquiring relevant information, the mechanism of "one case, three meetings, four promotions and two decisions" is shown: "one case" means investigating a typical case, and "three meetings" means that the unit involved should hold a punishment decision announcement and warning education meeting, a special democratic life meeting to promote reform by case, a report to promote reform by case and an effect evaluation meeting; "Four Promotions" means promoting education (warning education), governing (rectification), building (establishing rules and regulations) and preventing (preventing risks) through cases; "Two decisions" means that departments should cooperate, conduct directional analysis, supervise at designated points and improve actual results in places or fields where cases are frequent.