The general structural formula of the arylpyrazoline light-emitting compound substituted by the 5-position condensed aromatic hydrocarbon is as follows: wherein, R1 is 4-nitrophenyl, 4-cyanophenyl, 4-esterylphenyl, 2-nitro Phenyl, 2-cyanophenyl, 2-esterylphenyl, 2,4-dinitrophenyl or hydrogen atom, R2 is 4-nitro, 4-cyano, 4-esteryl, 2-nitro Group, 2-cyano group, 2-ester group or 2,4-dinitro group, R3 is 9-anthracenyl group, 9-phenanthrenyl group or 1-pyrenyl group. The preparation method is as follows: firstly, condensing aromatic aldehydes with condensed rings and aromatic ketones substituted with electron-withdrawing groups on the benzene ring to generate chalcone intermediates, and then condensing with aromatic hydrazines substituted with electron-withdrawing groups on the benzene ring to form a ring; The generated pyrazoline molecule has two chromophores, the "arylpyrazoline" and the 5-position anthracycline, which enhance charge transfer in the molecule, and the luminescence spectrum of the 5-position aromatic condensed ring is compatible with the arylpyrazoline chromophore The absorption spectra overlap to produce effective energy transfer, improve the luminescence and two-photon fluorescence of pyrazoline molecules.