Unmanned underwater vehicle device with multiple kinds of loads and using method thereof

The invention discloses an unmanned underwater vehicle device with various loads and a using method thereof, and relates to the field of underwater vehicles. The unmanned underwater vehicle comprises a shell. A plurality of main driving devices are fixed to the bottom of the shell, each main driving device comprises a positioning pipe, a support is fixed into the positioning pipe, a first motor is fixed to one end of the support, a driving rod is fixed to an output shaft of the first motor, a first rotating shaft is fixed to an outer ring of the driving rod, and a first positioning rod is fixed to an outer ring of the first rotating shaft. Two ends of the first positioning rod are fixedly connected with the inner wall of the positioning pipe. Under the action of the auxiliary driving device, the auxiliary driving device can continuously provide power for the main driving device when the main driving device breaks down, the main driving device is used for adjustment in the precise running process needing left-