In order to improve the preservation environment of cultural relics, Shenzhen Museum has established and implemented a preliminary preventive conservation system for cultural relics in the collection of its new pavilion (Shenzhen Museum of History Folk Culture). The project includes establishing a wireless monitoring system platform, improving the general preservation environment of cultural relics in exhibition halls and storerooms, regulating the microenvironment of special exhibition cabinets, configuring a variety of special cultural relic boxes, replacing existing display cases with independent high-quality exhibition cabinets in permanent exhibition halls, and establishing a monitoring and management mechanism for the preservation environment of the cultural relics. Thus, the preventive conservation capability and level of the museum are improved, and the influence of environmental factors detrimental to the safe preservation of cultural relics is reduced. This paper summarizes the process, mechanism, content, measures and related thinking of the project, which may be generally beneficial to the comprehensive and sustainable promotion of the preventive conservation of cultural relics.