Inform-and-promise system refers to the system in which government departments disclose specific standard conditions, the applicant promises to meet the examination and approval conditions in writing, and the administrative examination and approval authority directly makes administrative examination and approval decisions according to the applicant's promise. According to the "Informing Commitment System" issued by the Beijing Municipal People's Government, the informing commitment system refers to the way that the examination and approval service department announces the conditions, standards, technical requirements, application materials and legal responsibilities to be fulfilled for informing the applicant at one time, and the applicant promises in writing (including electronic text) that it meets the handling conditions, bears the corresponding legal responsibilities and the consequences of violating the promise, and the examination and approval service department makes a decision on the spot. The significance of the implementation of the notification commitment system: the speed of qualification declaration and approval has become faster. The notification commitment system has changed the shortcomings of the traditional qualification approval model, such as high threshold, cumbersome procedures and heavy approval, and enterprises can pass the approval more quickly. Engineering performance information becomes more important. The core of notification commitment system is approval and verification, and the success of construction enterprise qualification application will be directly linked to performance. The expert verification team will conduct on-the-spot verification of enterprise performance in the six-month examination and approval decision after the qualification application, and enterprises need to pay more attention to performance filing.