Abstract: In order to meet the requirements of data Transmission in management of pig farm, an ARM-based wireless transmission system of pig farm data was designed in this paper. The transmission terminal is an embedded wireless system that consisted of MC55 modem and S3C2410 processor which is the core of system. Wireless data transmission terminal hardware and software based on embedded Linux operating system and GPRS wireless data transmission technology were designed, and the software of data center server was put forward in detail. The experiment results showed that the data interaction between terminal and server was achieved by the system, and data transmission was reliable. Combined with RFID technology, the system can achieve animal ID transmission in real-time with good accurate.