The act of inhalation and exhalation is called breathing and the exchange of gases in the lungs the ventilation and perfusion are called respiration. Impaired breathing or any limitation in breathing can lead to various problems, and this limitation or impairment can be due to therapeutic surgeries and general anesthesia. The study aims at efficacy assessment of respiratory exercises on selected respiratory parameters. Recording of the respiratory parameters before and after respiratory exercises was done among post-operative laparotomy patients. Association of the socio-demographic variable with post-exercise respiratory parameter scores was calculated with help of the chi-square test. An experimental research design was adopted and a consecutive sampling technique was used to select 50 subjects. Data was obtained from study subjects with the help of Performa developed consists of Part-A –sociodemographic profile. Part- B – format for recording the measurements of selected respiratory parameters. Part-C – protocol on respiratory parameters. Part- D – Protocol on respiratory exercise. Approval was taken from the research and ethical committee of the institution. Data analysis was done. Result concluded that there was no significant difference between the pretest and post score of the experiment group. It can be due to the smaller sample size (n=25). However, it can be established with a lower sample size. On other hand, the “t” value calculated between control and experiment study reviled significant difference therefore conclusion was drawn that respiratory exercises were effective to bring change in respiratory parameters