Aim To analyse correlation between postprandial hypotension(PPH) of breakfast and morning blood pressure surge in essential hypertension patients. Methods 135 patients with essential hypertension who proceed 24 h ambulatory blood pressure were divided into non-PPH group(n=45), and postprandial hypotension of breakfast group(PPH-1 group)(n=45), and postprandial hypotension of lunch and dinner(PPH-2 group)(n=45). Average blood pressure, blood pressure load values, dipper rate, blood pressure variability and morning surge were observed in three groups. Results (1)24hSBPV, 24hDBPV, dSBPV, dDBPV, nSBPV of PPH-1 group was obviously higher than that of the non-PPH and PPH-2 group, and the difference was statistically significant(P＜0.05).(2)The morning surge value and morning blood pressure surge ratio of the PPH-1 group was significantly higher than that of non-PPH and PPH-2 group(P＜0.05).(3)Preprandial SBP was positively correlated with postprandial fall in SBP after meal(r=0.548,P＜0.001).Breakfast preprandial SBP was positively correlated with postprandial fall in SBP after breakfast(r=0.623,P＜0.001). Conclusion The higher the preprandial blood pressure, the more prone to PPH, breakfast postprandial hypotension patients have a higher blood pressure variability, morning surge phenomenon happens more easily.