Fluorescent disperse paste was prepared with four kinds of benzopyran fluorescent disperse dye and naphthalene sulfonic derivative dispersing agent using wet grinding process and their stability property was assessed for inkjet printing ink. Particle sizes and fluorescence intensity of the obtained four kinds of dye paste decreased with prolonging the grinding time. The absorbance ratio of the fluorescent disperse pink BG centrifuged for 50 min was 78.1%, indicating that pink BG paste performed excellent centrifugal stability. The particle sizes of all the fluorescent disperse dye paste increased after stored for 5 d at 55℃. The fluorscent disperse orange BG presented better thermal property as its particle size increased by only 7.5%. The fluorescence intensity of dye paste also reduced after heated. From all the discussions, the fluorescent disperse pink BG performed excellent stability to apply in the preparation of inkjet printing ink.