The invention provides a suspended combined formwork supporting frame used for a high pier bent cap. The suspended combined formwork supporting frame comprises pier body steel formworks and a supporting frame assembly, wherein the pier body steel formworks are horizontally connected between rebars at terminal joint chamfers of a pier body, the supporting frame assembly comprises supporting frame walings and bent cap formwork inclined struts, the supporting frame walings are horizontally connected between the pier body steel formworks at the two sides of the pier body through first connecting assemblies, and the bent cap formwork inclined struts are obliquely connected between bent cap formworks and the pier body steel formworks through second connecting assemblies. The problems that due to strong wind environment, a high pier is difficult to construct, low in work efficiency and the like are solved; in comparison with a conventional high pier support technology, it is avoided that workers and mechanical equipment work in strong wind for a long time, construction safety is effectively guaranteed, and the work efficiency is improved; in comparison with a bracket embedding technology, installation of embedded steel plates is reduced, the bracket disassembling risk is reduced, working procedures are simplified, and the work efficiency and structure quality are improved.