The rapid development of Industrial Internet has brought new changes to the system architecture for industrial manufacturing. This paper proposes a system architecture applicable to small-scale personalization production lines, the key of which is a three-layer architecture with the Internet layer, data layer, and field control layer, in which the user's requirements for personalization product are transmitted from the Internet to the production line and the production equipment realizes the personalized production of products by motion control. This system architecture for production lines integrates Industrial Internet and smart manufacturing technologies, which reduces the complexity of the enterprise system architecture and increases the flexibility of the system compared to mass personalization production systems. The system architecture has been proven in a flexible production line for yogurt filling and can lay the foundation for the trans-formation of industrial manufacturing to a personalization production.