People with diabetes require regular blood glucose monitoring to help them achieve as close to normal blood glucose levels as possible. Patients in the hospital setting are likely to have inconsistent blood glucose levels as they are affected by changes in diet and lifestyle, surgical procedures, and the stress of being in a hospital. The physician will prescribe how regularly the blood glucose monitoring is performed, it is usually the responsibility of the nurse to carry out and it may continue after discharge by the patient and family. Self-glucose monitoring is an important part of self-care after discharge. However, it has been stated that discharged diabetes patients lack the required knowledge for glucose monitoring. The methodology used was a Qualitative approach. The sample selected was Type –II diabetes mellitus patients> 18 years of age group. The pre-test was taken, structured teaching was given, and a post-test was taken, which showed a significant increase in the knowledge of the sample regarding self-glucose monitoring and competency assessment conducted for each sample followed by demonstration learning. Pre-test means 4.48 and post-test 8.4 after administering Patient and family education.