Taking retired cadres from Shiqi District, Zhongshan City as samples, to explore the correlation between ambulatory blood pressure variability and physical classification of traditional Chinese medicine in essential hypertensive patients, and to observe the effects of traditional Chinese medicine intervention on blood pressure variation.Methods：Some retired cadres from Shiqi District, Zhongshan City were selected for blood pressure measurement, among which 465 patients with essential hypertension were undergone 24 hours ambulatory blood pressure monitoring. Then the 465 patients were divided into dipper type group and non-dipper type group to compare the physical classification of traditional Chinese medicine. The changes of the patients with non-dipper circadian rhythm of blood pressure before and after the intervention of traditional Chinese medicine were observed.Results：There was significant difference between the dipper group and none-dripper group in terms of physical classification of traditional Chinese medicine (P<0.05). There were mainly the classification of damp heat and phlegm dampness in dipper type group. The non-dipper type group mainly showed Yin-deficiency, Qi-deficiency and Yang-deficiency types. Traditional Chinese medicine intervention can help improve the circadian rhythm of blood pressure, make the non-dipper blood pressure outcome to the dipper type blood pressure (P<0.05).Conclusion：There were some correlations between ambulatory blood pressure variability and physical classification of traditional Chinese medicine in essential hypertensive patients. And physical classification of traditional Chinese medicine can be an objective basis for dynamic patients with hypertension blood pressure variability, and provide an objective basis for intervention of individual Chinese medicine for the patients with hypertension.