The invention provides equipment and a method for forming a nozzle body, which are used for processing the internal or external geometric dimension of the nozzle body of an oil spray nozzle. The nozzle body is clamped by a chuck and is rotated; a central shaft is moved to a position opposite to a part to be formed of the nozzle body; an optical measurement subassembly is used for measuring the distance between the central shaft and the part to be formed of the nozzle body; and the material of the part to be formed of the nozzle body is ablated by a material processing subassembly.