Wireless sensor networks technology has been widely applied in the field of monitoring and control of environmental cultural relics preservation in recent years.By analyzing the basic components of wireless sensor networks in the museum environmental monitoring,wireless transmission mode and the status of applications in some museums,point out the problem of the wireless sensors such as fewer species,dysfunction,low accuracy,and wireless signal stability and so on,propose the technical requirements of wireless sensor which should meet the needs of the museum environmental monitoring,and provide recommendations and prospects about wireless sensor networks technology in the future.