The invention discloses a nine-shaft system for spraying of a combustor of a combustion turbine. The nine-shaft system comprises a three-shaft table, a six-shaft robot and a control cabinet, wherein the three-shaft table comprises a base and a first shaft joint arranged in the center of the base; a bracket is arranged at an interface of the tail end of the first shaft joint; second shaft joints are arranged at two ends of the top of the bracket; a rotary drum mechanism is connected to the tail ends of the second shaft joints; third shaft joints are arranged at two ends of the rotary drum mechanism; tool fixing mechanisms are uniformly distributed on the inner diameter surface of the rotary drum mechanism. Compared with the prior art, the nine-shaft system disclosed by the invention has the positive effects that the nine-shaft system disclosed by the invention is a nine-shaft linkage robot system capable of meeting requirements for preparation of a coating on the inner surface of the combustor of the combustion turbine, not only can the condition that a six-shaft manipulator is used for clamping spray guns and the condition that the three-shaft table is used for clamping a workpiece be in synergy movement, but also the combustor of the combustion turbine can be convenient and fast to mount and clamp, so that and coating preparation of the complex workpiece (such as the combustor of the combustion turbine) can be realized, various displacing manners of the clamped workpiece (such as the combustor) can be realized.