Objective: To research the changing tendency of incidence of high-normal blood pressure among Jinan Railway Bureau staff and analyze the related factors, so as to provide a scientific advice for corresponding intervening measures. Methods: By cluster sampling, 28 774 active staff of Jinan Railway Bureau were extracted from the data base for studying. They had taken the health examination for 5 consecutive years in our hospital. An extraction and statistical described analysis for blood pressure and related information were maken according to annual and uniform standards. Results: The incidence of high-normal blood pressure among staff of Jinan Railway Bureau from 2006 to 2010 appeared increasing year by year. Fourty-one year old previously, an increasing trend year by year was more than 41 years of age(P<0.01). In the comparison between different age groups, the incidence of high-normal blood pressure decreased with the age older(P<0.01). The incidence was the highest between the ages of 20-30(49.65%), and the lowest between the ages of 51-60(39.35%). Detection rate of target organ damage was higher in high-normal blood pressure groups than that of normal blood pressure group(P<0.01). Conclusions: The incidence rate of high-normal blood pressure of Jinan railway staff is increasing year by year, especially during the young staff. Meanwhile, the staff with high-normal blood pressure suffering from damaged target organ are increasing. Related intervening methods should be adopted, and the age for intervention should be younger than 30, so as to prevent or delay the occurrence of hypertension.