Two interface devices for online supercritical fluid chromatography（SFC）were developed for the determination of solubility of anthracene in supercritical carbon dioxide and its dissolving equilibrium according to the static and dynamic operating modes.The static interface was consisted of two high pressure valves，and the dynamic interface was composed of one high pressure valve and one gear pump.The gear pump built into the dynamic interface maintained a constant flow of supercritical fluid carbon dioxide solution from the solubility vessel through the interface sample injection valve in a return flow circuit.The solubility of anthracene in supercritical carbon dioxide was measured by static method，the impacts of temperature and pressure on solubility were investigated，and the obtained solubility data were correlatedly calculated according to the density based on model of Méndez-Santiago Teja（MST）.A series of progressively more concentrated anthracene/carbon dioxide solutions were separately prepared by increasing the pressure in controlled steps.Solubility of anthracene was measured at 40，50 and 60 ℃ in the pressure range of 100-275 MPa using 25 MPa steps.The experimental results demonstrated that good stability and reproducibility for the self-developed equipment were acquired with RSD value range of 04%-24% and experimental accuracy of 950%-977%.All sets of experimental solubility data were correlated according to the density based MST model，the calculated average absolute relative deviation（AARD）values were 323 and 1468，respectively.The developed interface devices could become a bridge for the combination of conventional analytical equipments such as FT-IR/UV/mass spectrometry with supercritical fluid technique in applications of online monitoring pharmaceutical compound synthesis and analysis，process analysis technique（PAT）.