Background: Lot of advancement is taking place every second in the medical field. There is an influx of information available. So, it is important to convey right information to the patients who are affected tremendously by diet. Most of the patients attending the OPDs belong to the old age group. The relationship between dietary protein and renal function has been studied for over half a century. Soon after, it was established that increased protein intake elevated rates of creatinine and urea excretion. Common mechanism underlying increased excretion rates was eventually attributed to changes in GFR. Aim: To assess the effectiveness of the structured teaching programme of the CKD patients on the knowledge about renal diet. Methods: The present study was aimed to assess the effectiveness of structured teaching programme regarding renal diet for the CKD patients attending renal OPD. The researcher selected the single group pre and post-test experimental design. An average of 25 to 30 patients attended per day in OPD and a total of 200 to 250 patients attended in a month. 60 samples were selected as per the inclusion criteria for the present study. The sampling technique adopted was convenient sampling method. Results: Assessment of baseline knowledge of the samples was done using a tool (questionnaire comprising of 20 questions). Conclusion: The effectiveness of structured programme was evident as 95% of population gained very good knowledge (score between 85-90%) regarding renal diet after the structured teaching programme and 5% of population had good knowledge (score between 75% to 80%) after structured teaching programme.