The present invention provides a three-stage door binding machine. In such a three-stage door binding machine according to the present invention, a side-end door latch, an upper door latch, and a lower-side opening and closing stick are connected to the opening/closing induction assembly that performs the closing link movement and the opening link movement according to the user's pressing motion. As a result, it has a technical feature that the opening and closing operation of medium and large-sized doors larger than the set size is made smoothly and the closed state after the closing operation is stably maintained by allowing the door to be connected in a three-level structure at the side and upper and lower ends of the door.
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