The vial filling line is suitable for the production of 2-25ml vial liquid injections. It can complete twenty or so processes, including spraying water, ultrasonic rough washing, water flushing of bottle outer wall, two times recycled water flushing of bottle inner wall, air blowing, clean water flushing, two times clean air blowing, blowing of bottle outer wall, preheating, drying, sterilizing and pyrogen removing, cooling, nitrogen pre-filling, filling, nitrogen post-filling, stoppering, capping and so on.