Personal hygiene aids in the disease prevention and health promotion. It is vital in every phase of life, but good cleanliness behavior starts in childhood. Children under the age of 5 years generally spend most of their time with parents and guardians, especially mothers, even when they attend pre-schools or nurseries. Mothers, who are the primary role model for them, their health beliefs and attitude towards health care, act as a significant predictor of children’s personal hygiene care. Hence knowledge of mothers has an important role in the maintenance of personal hygiene status of the children. This study was conducted with an objective to evaluate the impact of personal child care hygiene counselling intervention on knowledge, attitude and practices of the mothers towards preschool children.300 mothers were selected as samples for the counselling intervention programme study. Out of these 300 mothers 153 mothers treated as the experimental group for intervention and the other 147 as the control group. The experimental group received personal child care hygiene education through counseling by the researcher, while the control group did not. KAP method was used to measure the impact of counselling. It is overall concluded as from the results that knowledge, attitude and practice score level of the mothers in the experimental group was appreciable improved and statistically significant at 5 percent level (p-value < 0.05).