Abstract: Conflicts of interest and corruption are closely related, with conflicts of interest being the cause of corruption and corruption being the result of the conflicts of interest. Therefore, preventing the conflicts of public officials' interests is an important way to control corruption from the sources. Based on the needs of preventing corruption, integrating honest and clean government system, building close Party-masses relationship and overcoming the dilemma of administrative ethics, we must vigorously promote the construction of preventing conflicts of interest system. Promoting the prevention of conflicts of interest from the "inner-party law" to "national law", paying attention to the cohesion and coupling of supporting system, perfecting supervision system as well as increasing the intensity of punishment, and carrying out training on ethics of honest and clean government, constitute the direction, foundation, handle and guarantee of the construction of Preventing Conflicts of Interest System respectively.