The invention relates to an installing structure for a metal sheet and a plastic part. The installing structure comprises the plastic part and the metal sheet, wherein an installing groove into which the metal sheet can be inserted is formed in the plastic part; at least two installing bulges for fixing the metal sheet are arranged on the side wall in the installing groove. The width of the installing groove is larger than the thickness of the metal sheet, and the sum of the height of each installing bulge and the thickness of the metal sheet is larger than the width of the installing groove. The installing structure for the metal sheet and the plastic part, which is provided by the invention, is convenient to install, stable in structure and simple and convenient to machine.