The present invention relates to an aluminum coated steel sheet having excellent anti-corrosion properties and weldability, and a manufacturing method thereof. The aluminum coated steel sheet according to one aspect of the present invention includes: an austenitic base steel sheet including at least 70 area% of an austenite microstructure; and an aluminum coating layer formed on the base steel sheet, wherein the base steel sheet includes at least 80 area% of ferrite in a surface layer portion, which denotes a region extending from the interface with the coating layer to a depth of 100 µm into the base steel sheet, and the aluminum coating layer may have a composition comprising 2-12 wt% of Si, 5-30 wt% of Zn, and 0.1-5 wt% of Mn, with the balance being Al and inevitable impurities.