Ageing is a normal, universal and inevitable change which takes place even with best of nutrition and healthcare (Contran, 1998). This study investigates the effectiveness of teaching module on knowledge of caregivers of the elderly. A sample of 100 caregivers of the elderly were selected by purposive sampling method. Among 16 old age homes in Kanyakumari District, the investigator selected 10 old age homes by lottery method. The tools used for the data collection included demographic variables, knowledge assessment tool for caregivers of the elderly. Data were collected through self administered questionnaire. The major findings shows that mean pre test knowledge score of caregivers of the elderly was 38.96, and mean post test knowledge score of caregivers of the elderly was 68.38. The overall knowledge gained by the caregivers was 29.42% , and it was found to be significant (t=12.62, p<0.001). The association between the various aspects of knowledge was found to be significant (F=10.57,p<0.01). From the findings it is concluded that there was a marked improvement found in overall knowledge of the caregivers of the elderly after the educational intervention.