For cigarette laser paper packaging printing, according to standard printing conditions and process, UV ink was printed on the standard specimen of laser paper using IGT printability tester. The relationship between ink drying degree and paper water content with color explosive of laser paper was experimented. Results showed that ink drying degree and water content had obvious effects on color explosive of laser paper, the higher degree of the ink drying, the more likely its appearance. The water content of laser paper should be controlled within a certain range, too. As to the laser paper printing, under the condition of ensuring the initial drying properties of the ink, the 8% content of water in paper and ink dryness of 80% ~ 85% would cause the lowest rate of explosive color.