In order to solve the disadvantages of the traditional grain condition monitoring system, the development and implementation of a novel digital environmental monitoring solution for grain granary based on S3C6410X microcontroller and ARM-Linux embedded operating system is presented in this paper. The granary monitoring system proposes three-layer architecture based on distributed monitoring system, including application layer, data transmission layer and data acquisition layer. Furthermore, the design processes of the embedded environmental monitoring platform for grain granary, especially including its hardware structure and software components, are introduced in detail. The final experimental results show that it satisfies the real-time monitoring requirements of the granary environmental parameters such as the grain temperature, humidity, video image and other important sensor information.