Underwater automatic ball collecting barrel

The invention relates to an underwater automatic ball collecting barrel which comprises a framework, a protective cover and a ball blocking plate. The framework is of a cylindrical frame body structure; the protective cover comprises a protective net arranged on the outer ring and the top face of the framework, the ball blocking plate is arranged on the inner side of the lower end of the framework so as to be connected with the underwater flange, and a through hole is formed in the ball blocking plate so that foreign matter can enter the framework. And the lower end of the framework is an opening to detach the ball baffle to take out foreign matters in the protective cover. The underwater automatic ball collecting barrel does not need underwater operation of a diver, and is simple in structure and easy to construct; due to the non-closed net-shaped structure, the interior is visualized, and the ball collecting condition can be directly observed underwater through a camera and the like; a diver does not need t