the present invention discloses a high - strength tin - plated bronze tire bead steel wire , which comprises a steel wire base body . the surface of the steel wire base body is provided with at least two plating layers , and the tin content of the plating layers decreases layer by layer from inside to outside . the plating layer directly adjoining the surface of the steel wire base body has a high tin content , the adhesive force between the plating layer and the steel wire base body is strong , and the plating layer which has a high tin content can more effectively prevent the steel wire base body from rusting . the plating layers with the tin content gradually decreasing from inside to outside are combined closely with each other , and a strong adhesive force exists between the outermost plating layer with the relatively lowest tin content and tire rubber .