The invention discloses an automatic control system for steelmaking inspection and testing production. The automatic control system comprises an L2 control system, an automatic analysis control system, a pneumatic sample transporting control system, an analyzer computer and an analyzed data storage system, wherein the L2 control system is used for process control of each steelmaking production unit, the automatic analysis control system is used for automatic control of an analysis system, the pneumatic sample transporting control system is used for pneumatic sample transporting control of each steelmaking production unit, and the analyzer computer receives sample information transmitted down from the automatic analysis control system and uploads the sample information to the analyzed data storage system automatically via a network. By the automatic control system, a great amount of auxiliary time can be saved, molten steel smelting period can be shortened and considerable economic benefit can be created.