PROBLEM TO BE SOLVED: To provide an alloyed galvanized steel sheet having excellent edge face corrosion resistance and spot weldability without providing a special post-treated film on an upper layer of a plating layer.SOLUTION: An alloyed galvanized steel sheet having excellent edge face corrosion resistance and spot weldability having an alloyed galvanized plating layer consisting of Fe: 7 to 15 mass%, Al: 0.26 to 2 mass%, Mg: 0.21 to 6 mass% and the balance being Zn and inevitable impurities on a steel sheet, in which the Al content: Z(mass%) and the Mg content: Z(mass%) in the plating layer satisfy an equation (A) shown below and having an oxide layer containing Mg, Al and Zn on the plating layer. 0.8Z≤Z+0.6≤5.5Z+1.2...(A)
