Children are the blessings from the Lord. They are like clay in the potter’s hand. Health plays a major role in the future of the children to withstand and meet personal, psychological, and social needs and fulfill the challenges in life. In India, about 35% of the total population are children below 15 years of age. The World Health Organization(WHO) estimates that respiratory infections account for 6% of the total global burden of disease. The study was a quasi-experimental study with a quantitative research approach. The study was conducted in two government primary schools (Marankonam and Mundavilai). The data collection period was one month. The samples were preschool children between the age group of 4-6 years with acute respiratory illness. A purposive sampling technique was used to select the samples, the sample size was 40. The tool used for data collection Was Respiratory Parameter’s Observation Checklist. The findings revealed that the pre-test means score level of respiratory parameters among preschool children was 24. The post-test mean score level of respiratory parameters among preschool children was 16.5. the ‘t’ value 19.034* which is significant at p<0.001. The mean score of respiratory parameters among preschool children with acute respiratory illness in post-test was 16.5 and in control group 19.4 respectively. The unpaired ‘t’ values were 3.908* which is significant at p0.05.So the hypothesis (H2) is accepted.