Based on the analysis of the existing situ-ation of the management system of petrochemical sales enterprises,such as the lack of system manage-ment cooperation,insufficient system and business integration,insufficient system objective orientation,and difficulty of being consistent with the strategic direction,according to the concept of the interna-tional standard organization s high-level structure,the construction framework of the integration of the current common ISO management system of petro-chemical sales enterprises is put forward,and the suggestions for the construction of the management system integration are proposed:the first is to clarify the responsibility and integrate the objectives;the second is to sort out the process and focus on integri-ty;the third is consider risk consistently;the fourth is closed-loop management,with spiral rise;the fifth is to strengthen the digital intelligence construc-tion of the management system.