[Objective]Observe the clinical curative effect of phlegm-fire syndrome insomnia treated by Modified Huanglian Wendan Decoction.[Method] Col ect 208 cases phlegm-fire syndrome insomnia patients in the clinic which were randomly divided into two groups. 112 cases in the treating group were treated by Modified Huanglian Wendan Decoction, and 96 patients in the control group were given lmg estazolam.30d as a course, and observe the clinical curative effect after the course, including total effective rate, PSQI,TCM syndrome score and side-effect, etc. [Results]The total effective rate of phlegm-fire syndrome insomnia patients treated by Modified Huanglian Wendan Decoction was 91.96%, and the control group was 77.08%, there was significant difference between two groups. There were significant differences between two groups in PSQI ,TCM syndrome score and adverse reaction, too, it suggests that the treatment group is better than the control group.[Conclusion]The Modified Huanglian Wendan Decoction has a definite curative effect on phlegm-fire syndrome insomnia, and with little adverse reaction.