The concept of small auto-deployment underwater glider is proposed aiming at the difficulty of their promotion in large-scale in the military/civilian market due to the high manufacturing cost and inconvenient use of the underwater glider. The technical specifications and scheme design of a 10 kg auto-deployment underwater glider prototype are presented, and the main application scenarios of a group of small auto-deployment underwater gliders are described, demonstrating its profound impact on the ocean observation/detection and information technology. Finally, the relevant key technical difficulties are analyzed to provide solutions.