Catfish effect, catfish not only stirs the living environment of small fish, but also activates the survival ability of small fish Catfish effect is a means or measure to stimulate some enterprises to get active and participate in the competition in the market, thus activating the enterprises in the same industry in the market. Its essence is a negative incentive, which is the mystery of activating the staff. It needs to be emphasized that in some enterprises, because some bureaucrats have been idle for a long time or unable to undertake new tasks and responsibilities, catfish talents have become the driving force for enterprises to improve. Catfish effect is one of the effective measures for enterprise leaders to stimulate employees' vitality. The catfish effect has been applied in human resource management and leadership activities, including the establishment of competition mechanism, the activation of capable people, the change of leadership style and so on.