Deepwater bagged sand construction device and deepwater bagged sand construction technology

The invention relates to a deepwater bagged sand construction device and a deepwater bagged sand construction method. The deepwater bagged sand construction device is characterized by comprising an opposite pull boat (1) arranged at one side of a sand bag (2), and an opposite pull auxiliary boat (3) which is arranged at the other side of the sand bag (2) and is paired with the opposite pull boat (1), wherein the opposite pull boat (1) is fixed by four reversed V-shaped opposite pull anchor cables (11), wherein two of the opposite pull anchor cables (11) are arranged at the front, and the other two opposite pull anchor cables (11) are arranged at the back; the opposite pull auxiliary boat (3) is fixed by four reversed V-shaped opposite pull auxiliary anchor cables (31), wherein two of the opposite pull auxiliary anchor cables (31) are arranged at the front, and the other two opposite pull auxiliary anchor cables (31) are arranged at the back; the opposite pull boat (1) is provided with two hoisting machines (4