The invention discloses a three-frequency polarization insensitive electromagnetic energy collection structure unit and a collection surface. The collection structure unit comprises four identical-structure rectangular resonance rings having openings at bottom edges, centers of top edges of the rectangular resonance rings are provided with circular through holes, one side edge of each rectangular resonance ring is connected with a bottom edge of the adjacent rectangular resonance ring, and an end-to-end rectangular resonance ring structure is formed. The collection surface comprises a metal structure layer, a medium substrate, a ground metal layer and a matching resistance array, wherein the metal structure layer comprises more than one collection structure unit, the medium substrate is provided with through holes in matching with the circular through holes respectively, the matching resistance array comprises more than one resistor, each resistor is respectively arranged in one through hole, one end of the resistor is connected with an edge of the circular through hole, and the other end is connected with the metal layer. According to the collection structure unit and the collection surface, a purpose that resonance absorption is generated at three frequency bands is realized, polarization insensitive characteristic is realized, the collection structure unit is applicable to application under the complex electromagnetic environment, the structure is stable and solid, cost is low, and the collection structure unit is suitable for large-scale production.