Abstract: Objective: After the gradual formation of urban rail transit line network scale, the construction work in the urban rail transit safety protection area (hereinafter referred to as ′protection area′) shows a trend of complexity and diversification in its impact on urban rail transit structure and facilities. The current construction operation management system of the protection area has problems such as poor linkage of various management joints and low system efficiency, therefore the establishment of a dynamic management system of construction work in ′protection area′ should be studied. Method: A dynamic management system of protection area with closely integrated ′inspectionreviewguardianship′ mechanism is constructed; the basic requirements for these three mechanisms engaging in operation are proposed, including a highfrequency fullcoverage inspection mechanism, a highefficiency classifiedgraded review mechanism, and a wholeprocess dynamic guardianship mechanism; the matching management process for different construction works are proposed: smallscale construction work can be quickly reviewed, while graded review should be carried out on regular projects from aspects including technical solutions, expert demonstration and structural monitoring; noncompliance operations should be efficiently disposed of and dynamically joined with review mechanism; special operations such as drilling should be regulated through the establishment of a supervisory cloud platform to avoid construction risks and achieve advanced control and accurate prediction. Result & Conclusion: The dynamic management system of construction work in protection area should have the functional attributes of dynamic response, joint disposal, flexibility and efficiency, and it is very necessary to adopt information technology to improve the dynamic management of construction work in ′protection area′.