An organic electroluminescence device, comprising: a first electrode (EL1); a second electrode (EL2) on the first electrode; and an emission layer (EML) between the first electrode and the second electrode, and comprising a polycyclic compound represented by Formula 1 wherein the first electrode and the second electrode each independently comprise silver (Ag), magnesium (Mg), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), LiF/Ca, LiF/Al, molybdenum (Mo), titanium (Ti), Indium (In), Tin (Sn), Zinc (Zn), any compound thereof, any mixture thereof, or any oxide compound thereof: wherein in Formula 1, A1, A2, and A3 are each independently a substituted or unsubstituted C5 to C30 hydrocarbon ring or a substituted or unsubstituted C2 to C30 heterocycle, X1, X2, and X3 are each independently a substituted or unsubstituted C5 to C30 hydrocarbon ring, or a substituted or unsubstituted C2 to C30 heterocycle, Y1, Y2, and Y3 are each independently , or , Ra is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heteroaryl group, characterized in that the emission layer comprises at least one selected from polycyclic compounds in Compound Group 1: a first electrode (EL1); a second electrode (EL2) on the first electrode; and an emission layer (EML) between the first electrode and the second electrode, and comprising a polycyclic compound represented by Formula 1 wherein the first electrode and the second electrode each independently comprise silver (Ag), magnesium (Mg), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), LiF/Ca, LiF/Al, molybdenum (Mo), titanium (Ti), Indium (In), Tin (Sn), Zinc (Zn), any compound thereof, any mixture thereof, or any oxide compound thereof: wherein in Formula 1, A1, A2, and A3 are each independently a substituted or unsubstituted C5 to C30 hydrocarbon ring or a substituted or unsubstituted C2 to C30 heterocycle, X1, X2, and X3 are each independently a substituted or unsubstituted C5 to C30 hydrocarbon ring, or a substituted or unsubstituted C2 to C30 heterocycle, Y1, Y2, and Y3 are each independently , or , Ra is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heteroaryl group, characterized in that the emission layer comprises at least one selected from polycyclic compounds in Compound Group 1: A1, A2, and A3 are each independently a substituted or unsubstituted C5 to C30 hydrocarbon ring or a substituted or unsubstituted C2 to C30 heterocycle, X1, X2, and X3 are each independently a substituted or unsubstituted C5 to C30 hydrocarbon ring, or a substituted or unsubstituted C2 to C30 heterocycle, Y1, Y2, and Y3 are each independently , or , Ra is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C2 to C30 heteroaryl group, characterized in that the emission layer comprises at least one selected from polycyclic compounds in Compound Group 1: <EOS>