The present invention relates to an anti-fall alarm system for a child, which is installed in a railing of a building and detects a child''s approach and outputs a sound of a predetermined warning pattern if the distance between the child and the detected child is within a warning separation distance And an emergency alarm signal terminal installed in the building corresponding to the safe activity area of the infant and performing wireless communication with the rail alarm terminal and receiving an emergency signal transmitted from the rail alarm terminal when it is determined that the infant has been detected within a set alarm distance, And a main terminal for outputting interest expression information set to cause interest to be output through a main output unit. According to the child fall alarm system, when an infant is approaching a rail, an alarm sound is generated from the rail, and the information of interest expressing the interest of the infant is displayed in the safety activity area opposite to the rail, Thereby preventing the occurrence of safety accidents.
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