The invention provides an opened type back-to-back water-cooling SVG (Static Var Generator) valve pile. The opened type back-to-back water-cooling SVG valve pile comprises a base, bottom support insulators, back-to-back support insulators, an upper bottom plate, a lower bottom plate, valve pile frameworks, modules, a copper bar, an optical fiber and water paths, wherein the water-cooling SVG valve pipe adopts a three-dimensional opened structure, two lines of valve piles are connected through the support insulators, each line of valve pile comprises the three groups of frameworks, the frameworks are connected by the insulators, connected with the upper bottom plate and the lower bottom plate and fixed on the base by the bottom support insulators, the base is welded on a foundation, the valve pile is matched with an independent water distribution pipeline, the modules are arranged in the frameworks in a drawer way, and all the modules are connected in series. The opened type back-to-back water-cooling SVG valve pile provided by the invention is compact in structure and small in occupancy area, and the transportation cost and in-site installation time and cost are reduced. The water pipes of the opened type back-to-back water-cooling SVG valve pile are arranged at two sides and the bottoms of the modules, and a risk due to water leakage of the water pipes is reduced.