The present disclosure describes a compound, a light-emitting material, an organic light-emitting display panel and an organic light-emitting display device. The compound has the structure of Formula I. The light-emitting material comprises any one or a combination of at least two of the compounds. The organic light-emitting display panel comprises an anode and a cathode disposed opposite to each other, and an organic layer disposed between the anode and the cathode. The material of the organic layer comprises any one or a combination of at least two of the compounds. The organic light-emitting display device comprises the organic light-emitting display panel. The compound has an energy level difference between a singlet and a triplet states as ΔEst≥0.30 eV, and, when used in an organic light-emitting display panel, can further increase the luminous efficiency of the device.