Fluorescence anti-forgery offset printing ink was prepared using europium β-diketone ternary complex, europium ternary complexes of aromatic carboxylic acids, and europium β-diketone-aromatic carboxylic acid complexes as fluorescent agents. The influence of fluorescent agent types, fluorescent agent dosage on fl〖JP2〗uorescence properties of the fluorescent ink was studied. The results showed that europium β-diketone-aromatic carboxylic acid complexes has high luminous intensity, good heat stability, and good light stability, which is suitable for preparation of fluorescent security ink; the suitable fluorescent agent dosage of the ink is about 8% mass fraction.