The invention relates to a pier mould, in particular to a pier casting mould. Four main templates (1) are arrayed in a 'square' shape; every two main templates (2) are respectively connected with two sides of two surface templates (5) through connection bolts (8) to form a '=' shape; the outer sides of the four main templates (1) are respectively connected with one sides of four circular-arc-shaped templates (4); the other sides of the four circular-arc-shaped templates (4) are respectively connected two by two through side templates (3) and the connection bolts (8) to form a pier casting mould cavity (6) which has a square-shaped structure with circular-arc-shaped angles. In the invention, by designing the surface templates, the circular-arc-shaped templates and the side templates into structures with stronger commonality, the pier casting mould can be applicable to a plurality of pier structures, is particularly applicable to the piers with the height of more than 6 meters, and has comprehensive use cost of being lower than that of the traditional mould.