To discuss effect of Zexie Decoction on primary hypertension of excessive phlegm pattern. Methods:Eighty patient with primary hypertension of excessive phlegm pattern were randomized to two groups, one group with Diovan, the other with Zexie Decoction plus Diovan. In 28-day follow-up visit, overall syndrome and single symptoms improvements were observed. Results:After treatment, overall syndrome rating decreased when compared with that of prior treatment (P<001), for which the control group was better than treatment group (P<001); Compared with before treatment, symptoms such as vertigo, headache, chest stuff, insomnia, palpitation improved significantly(P<001), vertigo, headache and insomnia in particular were better improved in treatment group than control group (P<005 or P<001). Conclusion: Zexie Decoction can better improvement Primary Hypertension of Excessive Phlegm Pattern Patient traditional chinese medicine macrocosm symptoms, can improvement more obvious to main symptom's Vertigo,headache,hypo-symptom 's insomnia.