The main purpose of digital identity in smart agriculture is to achieve the digitization and precision agriculture goals. This is done through the construction of AIoT sensing devices, 4K imaging devices, and related data transmission infrastructure. With regular data collection and the addition of image-based AI comparison modules, the growth status of crops on the farm and corresponding environmental data can be comprehensively grasped. By comparing the changes during the growth process and final harvest data, the best planting conditions for crops can be analyzed. This information can provide farmers with decision-making recommendations and achieve the goal of fully automated environmental control. Developing the digital identity of smart agriculture for food crops or cash crops is a national strategic issue and an urgent focus for technological agricultural development. This project can provide a variety of digital identity models and execution services for agriculture, allowing future digital identity models developed by agriculture experts to have an efficient and friendly execution environment. This will greatly contribute to the upgrading of our country's technological agriculture and enhancing international competitiveness.