Alloyed hot-dip galvanized steel plate with excellent machining formability and manufacturing method thereof

The invention relates to an alloyed hot-dip galvanized steel plate with excellent machining formability and a manufacturing method thereof. According to the technical scheme, the hot-dip galvanized steel plate sequentially comprises a cold-rolled steel plate, an alloyed hot-dip galvanized coating, a solid lubricating layer and an anti-rust oil film from bottom to top; the solid lubricating layer is mainly composed of Zn sulfide and Fe sulfide, the total weight of the sulfur element in the Zn sulfide and the Fe sulfide is 1-40 mg/m , and the solid lubricating layer can improve the fluidity ofthe alloyed hot-dip galvanized steel plate in the stamping machining forming process, improve the stamping forming performance of the alloyed hot-dip galvanized steel plate, and eliminate or reduce the phenomena of zinc sticking and pulverization and drop of the alloyed hot-dip galvanized steel plate in the stamping forming process. The alloyed hot-dip galvanized steel plate has good surface lubricity and good pulverizatio