Wax treatment process by using investment casting

The invention provides a wax treatment process by using investment casting, and belongs to the technical field of investment casting. The wax treatment process by using investment casting comprises the following steps of step S1, enabling a wax material to enter a steam dewaxing kettle through a wax inlet, and dewaxing the wax material by the steam dewaxing kettle; connecting a filtering device toa wax outlet of the steam dewaxing kettle, filtering the wax material dewaxed by the steam dewaxing kettle in the filtering device, and removing impurities in the wax material; step S2, supplying thewax material with the impurities removed through the filtering device to a plurality of wax storage barrels through conveying pipelines; and meanwhile, converging a pipeline from a new waxing wax barrel into a main pipeline from the rear part of the filtering device to the wax storage barrels, and enabling the new waxing wax barrel to pump new wax into the wax storage barrels through the conveying pipelines. The wax mater