The authors set up an experiment instrument to measure the ultraviolet(UV) characteristic of oil spill simulation targets for the marine oil spill.After selecting appropriate conditions for experiments, the authors tested UVreflective spectrum of four simulation targets for oil spill (gasoline, kerosene,diesel fuel, lubricating oil). The authors calculated the UV absolute spectrumreflectivity of all testing targets from the standard white board as reference,whose UV reflectivity was given. With processing and analyzing the data fromexperiments, the authors got the reflective characteristics of them in contrastto the reflectivity of water, which was measured in the same conditions. Alltargets were tested from 320 to 400 nm, and UV reflectivity wave-band between 360and 380 nm was representative. Testing data were shown as follows: (1) Thereflectivity of water was from 5.3% to 5.5%. (2) When the thickness of oil filmwas 400 μm, the reflectivity of gasoline was from 8.5% to 8.8%, 5.4%-5.8% forkerosene, 8.3%-8.4% for diesel fuel, and 9.4%-9.7% for lubricating oil in thesame wave-band between 360 and 380 nm. Correspondingly, the indeterminacy ofreflectivity was 0.32%, 0.45%, 0.25%, and 0.33% respectively. (3) Hence thethickness of oil film changed, the rule of the UV reflectivity varied dependingon the sort of oil spill. The results show that there were some obviousreflectivity differences among oil films and water, which were mainly determinedby the sort and thickness of oil film. This experiment method is also fit for theactual oil spill target, and it will fulfill some theory and experimentalfoundation for inspecting the marine oil spill by UV remote sensing in thefuture.targets(40776100)资助