In view of the problems of unintuitive operation and poor user experience in the human-computer interaction of smart homes, the article proposes the application of virtual reality technology on the basis of relevant theoretical analysis, based on unity development platform and smart home control center, a smart home control system based on virtual reality technology is designed and developed. The system is composed of client, cloud and device. The client realizes virtual roaming, real-time display of device status and remote control. The cloud realizes the functions of control command forwarding and data storage. The gateway is used to communicate with each home device and cloud to realize the functions of sending control commands and reporting device status data. The test shows that the system is novel and practical. Using virtual reality technology as a human-computer interaction interface for smart home control can give users an intuitive smart home control experience and improve the user's experience.