The automatic fire alarm system plays a crucial role in safeguarding personnel lives and equipment safety in cement plants. This paper introduces the definition and components of the automatic fire alarm system, elaborates on key design aspects including the coverage scope, configuration selection, selection and placement of fire detectors and audible/visual alarms, cabling requirements, and networking strategies for fire alarm controllers. Taking a 5 000t/d cement production line project in Southeast Asia as an example, the practical application effectiveness of the system in cement plants is demonstrated, highlighting its significance in detecting fire hazards and early-stage fires. When designing fire alarm systems for cement plants, strict compliance with the latest national and industry-specific fire protection regulations is essential. Additionally, the unique characteristics of cement production facilities must be thoroughly integrated to ensure system reliability, prevent fire incidents, and enhance overall fire protection and safety management standards.