The invention relates to a flow field constructing and machining integrated tool for electrolysis and electrosparking, and belongs to the clamping apparatus design and manufacturing technology in the technical field of special machining. The flow field constructing and machining integrated tool is characterized in that a closed elastic cavity is formed by an annular elastic insulator (3), and a strip-shaped elastic insulator (4) is embedded in a gap of an electrode (2) and is divided into two concave cavities including a liquid inlet cavity (5) and a backpressure cavity (6). Each of the liquid inlet cavity (5) and the backpressure cavity (6) is internally provided with a through hole leading to the outer portions of the concave cavities, and the through holes serve as a working liquid inlet hole (7) and a liquid outlet hole (8). During machining, working liquid flows in from the liquid inlet hole (7) of the liquid inlet cavity (5), flows into the backpressure cavity (6) through the gap between the electrode (2) and a workpiece (10) and flows out of the liquid outlet hole (8) of the backpressure cavity (6). After machining is finished, a tool is directly elevated, and the workpiece (10) is unloaded.