As market conditions shift, factories often face unstable order volumes. Traditional manual scheduling in conventional factories fails to respond promptly and effectively to order changes. To ensure a stable supply, inventory backlogs frequently accumulate, directly trapping factories in a costly, low-efficiency deadlock. Alps System Integration (Dalian) Co., Ltd., rooted in the manufacturing front line, has developed the APS Planning and Scheduling System based on site-specific variables and the construction needs of Smart Factories. Leveraging extensive data and sophisticated backend algorithms, this system accurately captures end-to-end factory data, enabling precise production scheduling according to orders and actual production conditions. It enhances the controllability of Smart Factory manufacturing processes and improves the production line's ability to respond to sudden surges in orders, last-minute insertions, and other unexpected issues. Meanwhile, it dynamically adjusts factory inventory based on order fluctuations, preventing supply shortages while reducing inventory costs. The APS Planning and Scheduling System introduced in Smart Factories effectively helps factories proactively mitigate risks and respond in real time, minimizing the impact of order instability on operations.