Hypertension is an important public health- challenge in the developing and the developed world alike. However, hospital-based studies on cardiovascular diseases including hypertension in a developing country like Nepal have been limited. Objective: The objective of the present study was to determine the awareness of hypertensive patient about self-care and complication management. Methods: A total of 50 adult hypertensive patients over who attend in medical outpatient department and in patient department of Manomohan Cardiovascular Thoracic and Transplant Centre, Tribhuwan University Teaching Hospital, Kathmandu, were included using a descriptive research design. The data was collected by face to face interview, using a questionnaire consisting of a combination of structured and semi- structured questions from 8 April 2012 to 6 May 2012A.D. This study shows that only 14% of respondents were aware about hypertension while highest number of respondents (56%) was moderately aware about it. Only 15% of respondents were unaware about it. Total awareness score is 45. Average level of awareness is 27.14. It can be concluded that the awareness level of hypertensive patients is still low. The modification of life style is satisfactory for most risk factors, except for few like salt intake, additional salty food. So Focus should also be given on modification of lifestyle for reducing the adverse consequences of hypertension. Data analysis was done by using SPSS 16 version