The wireless image monitoring system in pig house was designed to solve the high costs and the low efficiency problem of pig house security management based on the technology of nRF905 and WiFi. The union of wireless multimedia sensor networks and Internet was realized by the WiFi technology. The performance of the wireless multimedia sensor of the pig house monitoring system was analyzed. The results showed that environment parameter information and the growth conditions of the monitoring area were monitored accurately and transmitted reliably by the pig house monitoring system, which will provide the research foundation and methods to the design of the wireless multimedia image data transmission.