Galvanized steel sheet having excellent fatigue strength in resistance spot welding portion, and method for manufacturing same

The present invention relates to a galvanized steel sheet having excellent fatigue strength in a resistance spot welding portion, and a method for manufacturing the same. A galvanized steel sheet according to one aspect of the present invention may include a base steel sheet and a zinc-based plating layer formed on a surface of the base steel sheet, in which a concentration distribution of oxygen and one or both of silicon and manganese measured in a depth direction from the surface of the base steel sheet may have a form showing a maximum point in the depth direction from the surface, the absolute value of the difference between the depth at which the maximum of the concentration distribution of oxygen is formed and the depth at which the maximum of the concentration distribution of one of silicon and manganese is formed may be 0.5 [mu] m or less. 本发明涉及一种电阻点焊部的疲劳强度优异的镀锌钢板及其制造方法。本发明的一个方面的镀锌钢板可以包括基础钢板和形成在所述基础钢板的表面的锌系镀层，其中，从所述基础钢板的表面沿深度方向测量的氧与硅和锰中的一种或两种的浓度分布可以具有从表面沿深度方向显示极大点的形式，形成所述氧的浓度分布的极大点的深度与形成所述硅和锰中的一种的浓度分