For the traditional method of digestive tract disease diagnosis, the accuracy rate is low and the process is painful. In order to solve these problems, a wireless capsule endoscope system was designed using the wireless communication technology to transmit the image of the tract out of the body. Firstly, the image gathering module was used to capture the image of the digestive tract. Secondly, the image data was transmitted out of the body by the digital wireless communication system. Finally, the data was quickly uploaded to PC by the receiving module to decompress and display the image. The experimental results show that the wireless communication system with MSP430 and ZL70102 has several excellent features such as small-size, low-power and high-rate. Compared with the existing capsule endoscope that transmits analog signal, this digital wireless communication system has strong anti-interference capacity. Also, the accuracy of transmitting image data can reach 80% and the power consumption is only 31.6 mW.