The invention relates to the field of bridge precast beam pipeline positioning construction, and in particular relates to a PC beam prestressed pipeline three-dimensional position indicator, in order to solve the problems that the existing traditional manual positioning is multiple in repeated operation, great in manual operation and great in pipeline positioning deviation, and the like. The PC beam prestressed pipeline three-dimensional position indicator comprises a base, a vertical scale and a horizontal scale, wherein the vertical scale is fixed on the base; the horizontal scale is mutually vertical to the vertical scale and movably connected with the vertical scale through a sliding sleeve; an inclined support rod is fixed between the vertical scale and the horizontal scale; two ends of the inclined support rod are respectively and movably connected with the vertical scale and the horizontal scale; a level bubble is fixed above one end of the horizontal scale; and the other end of the horizontal scale is provided with two positioning scales capable of moving along the horizontal scale. A longitudinal, horizontal and vertical three-dimensional coordinate is adopted for positioning, the pipeline coordinates of a pipeline at different cross-section parts can be positioned accurately, and guarantee is provided for the construction quality, and the PC beam prestressed pipeline three-dimensional position indicator has the advantages of simple structure, small size, light weight, high accuracy and the like, is convenient to carry, is repeatedly used, and can perform accurate pipeline positioning.