The invention relates to a novel production process of a prefabricated pier column. The novel production process of the prefabricated pier column comprises the following steps: step 1, a formwork is designed and machined; step 2, the formwork is cleaned; step 3, a bottom formwork is mounted; step 4, a reinforcement cage is hoisted into the formwork; step 5, a side formwork is installed; step 6, concrete is poured; step 7, formwork removal and maintenance are conducted; step 8, the pier column is hoisted away; step 9, storing and inspecting are conducted; and step 10, roughening and leaving the factory are conducted. According to the invention, horizontal pouring is adopted for prefabricated pier column concrete pouring, a series of working procedures such as formwork overturning frame installation, overturning hanging bracket installation, formwork overturning, hoisting the formwork to a pouring table to be fixed, operation platform installation, component overturning and the like are omitted, and limitation of the height / length of a prefabricated pier column, the hoisting height of hoisting equipment and a component overturning mechanism is not needed; and therefore, the pouring speed is increased, time and labor are saved, and the prefabricating efficiency is improved. Horizontal pouring is adopted for prefabricated pier column concrete pouring, and therefore, climbing operation of workers is not needed, operation safety is guaranteed, and production efficiency is improved.