Abstract: The people screened were adults above 15 years of age.Five cities and five counties were selected at random in Shandong.Population screened in each area covered about 4000 inhabitants of different age groups （from 15 to 80 + yrs） in both sexes.The means and percentile of SBP and DBP were given,in which previously known hypertensives were excluded from the analysis of current BP level.Age specific means and the 50th percentile of SBP from 15～ to 70～ years of age increased by 17 mmHg and 13 mmHg in male,and 29 mmHg and 26 mmHg in female respectively.The increase range of the means of DBP from 15～ to 70～ years of age and the values of the 50th percentile of DBP in male was equal to that in female,being increased by 6 mmHg in male and 7 mmHg in female.The means of SBP level in the city group of under 55 were lower,and equal to or higher in the group of above 55 than those of the same age groups in the rural areas.The means of DBP level in the city group of undcr 35 were lower,and equal to or higher in that of above 35 than those of the same age groups in the rural areas.Correlation and multiple regression analyses were made for the relationship between BP level and certain factors.The results indicate that the relational factors to BP level are age,weight,BMI（weight kg/height 2 m）,WH（weight kg/height 3 m）,EBW（percentage of exceed body weight）,heart rate,smoking drinking,and history of hypertensive family.