Abstract: A ribbon type high frequency loudspeaker structure has a ring-shaped upper magnetic plate, a ring-shaped magnet, and a lower T-shaped magnetic plate with an inner magnet pole, which form a magnetic path structure. The inner magnet pole of the lower T-shaped magnetic plate is located in the center of the ring of the ring-shaped upper magnetic plate and the ring-shaped magnet. An inter-magnet gap is formed between the outer pole surface of the inner magnet pole and the inner ring surface of the ring-shaped magnet. A flat-type vibration diaphragm is set on the top of the upper magnetic plate said fiat-type vibration diaphragm is formed by molding a spiral-shaped flat coil on the substrate surface of the non-conductive thin film. The flat-type coil is located in the inter-magnet gap between the upper magnetic plate and the lower T-shaped magnetic plate.