Abstract: Based on the ACP theory, the digital quadruplet for smart tank systems is designed, which consist of actual physical tank, software defined descriptive tank, predictive tank, and prescriptive tank. Four core techniques of the parallel tank systems, namely, parallel vision, parallel reinforcement learning, parallel steering control, and parallel network systems are introduced. The integrated platform of parallel tank systems is presented, which includes the remote control platform, the actual intelligent tank, and the parallel control and management platform. Finally, the future applications of the parallel tank systems are illustrated.