An LED lamp with combined radiator structure comprises: at least one LED chip (2) for light generation; a driving circuit for driving the LED chip (2); a first substrate (3) with radiating ribs; a second substrate (4) with radiating ribs, wherein the second substrate (4) is installed on the first substrate (3) and contacted with the radiating ribs of the first substrate (3); and a glass envelope (1) installed on the first substrate (3) and covering the second substrate (4).
