The utility model discloses a naval vessel signal lamp automatic control device. It includes control system and message transmission system, and message transmission system process data fusion system is connected with control system, last ability degree sensor and the naval vessel dynamic sensor of being connected with of message transmission system, and the data fusion system has time quantum database and ship type database, and the data message of visibility sensor, sunset sunrise database and boats and ships dynamic sensor, ship type database can be through sending to control system after message transmission system and the processing of data fusion system. Its advantage lies in: through real -time collection visibility at that time, boats and ships dynamic scheduling information to combine time quantum database, the naval vessel ship type data storehouse of sunset on the same day to sunrise, integrated treatment, decision -making realize naval vessel signal lamp switch automaticity, ageing, rapidity, accuracy, and the signal lamp demonstration has been accomplished to the accuracy, has overcome artifical open a great deal of unfavorable, the security that has improved the naval vessel.