The invention discloses a control flow for a manipulator of a precision gear hobbing machine. The control flow for the manipulator of the precision gear hobbing machine comprises the following steps:taking workpieces out from material trays in sequence by the manipulator, putting the machined workpieces back to the material trays by the manipulator, and judging whether the workpieces exist on thematerial trays or not, wherein 2 to 5 material trays can be placed into a lifting mechanism, and each layer has a detecting mechanism for detecting whether the material trays exist on the corresponding layer or not; and lifting the material trays detected to be full of materials to designated positions by the lifting mechanism, and enabling a matrix material tray belt line to start rotate forwards to feed rectangular material trays to the material tray belt line of a three-axis manipulator which is rotating forwards. The control flow of the manipulator is mainly applied to automatic feeding and discharging of components machined by a gear hobbing machine of a client; the manipulator of the gear hobbing machine is controlled by the flow, and therefore the automation degree of client equipment, the production efficiency of products and the quality of the products can be improved; and a plurality of complicated transmission modes, such as pneumatic and servo modes, are comprehensively utilized, so that the overall system operates stably, rapidly and precisely.