Hypertension is the conman cardiovascular disorder now recorded as a major health problem. Hypertension is the chronic medical condition in which blood pressure in arteries is elevated than the normal range. In this study, the descriptive research design is used and nonprobability continent sampling technique is used for selection of the sample, the sample is a hypertensive client in Medicine Ward OPD OF Birla hospital, and the sample size is 50 .and data are collected by a structured questionnaire. The level knowledge score regarding hypertension among the hypertensive client are different from the finding of study conclude the highest % of hypertensive client (38%) Was in the group 25 to 35 year, majority of sample according to gender are (54%) from female, highest % (32%) are from below high school, majority of sample occupation (56%) are housewife, majority of sample are belong the nuclear family (74%) majority of sample are belief in Hindu religion. highest parentage (72%) belong to the rural background. The reason for conducting in this study in Birla hospital because most people comes from rural area they having very less exposure of knowledge.