The invention relates to an immersed tube tunnel construction technology and particularly relates to a tube coupling drawing system for immersed tube tunnel construction. The system comprises a drawing jack, a first support, a second support and a hook part. The first support and the second support are arranged at the tops of a to-be-mounted tube coupling and a mounted tube coupling respectively, the drawing jack is connected onto the first support rotatably, the hook is connected onto the second support rotatably, and a drawing connector is arranged at the front end of the drawing jack and can be in lap joint with the hook part through vertical rotation and cross retraction of the drawing jack. According to the system, drawing lamp joint is performed through a drawing component of the drawing jack and the hook part, and the drawing component is arranged at the top of the tube coupling, so that damage to the tube coupling structure is prevented, large tension can be provided, and the tube coupling efficiency is improved; the underwater unmanned operation can be performed through the rotary jack to draw the jack to rise and descend, the drawing jack lap joint speed is fast, and the safety is high.