GB/T 39555-2020 "Smart Laboratory, Interface of Instrument Equipment Climate, Environmental Test Equipment" standard specifies the Interface requirements for climate and environmental test equipment in smart laboratories. The standard defines the terms, data definitions, data types and data structures of the Interface in detail to ensure efficient communication and data exchange between test equipment and systems. The standard is applicable to climate and environmental test equipment with Interface function, and can also be used as an Interface design reference for Miscellaneous intelligent laboratory equipment. By standardizing the Interface, the standard aims to improve data compatibility and System integration between equipment.