Background: Febrile convulsion is one of the most common paediatric problems worldwide; it can be frightening, emotionally traumatic and anxiety provoking for parents, particularly mothers, which may lead to mis management. Objectives: To assess the pre-test and post-test knowledge of mothers of under-five children, evaluate the effectiveness of the structured teaching programme on the knowledge of mothers of under-five children, and to find the association of their pre-test knowledge scores regarding the management of febrile convulsions with their selected demographic variables. Methodology: A quantitative research approach with pre-experimental one-group pre-test post-test design was used in this study conducted on 50 mothers at SKIMS, Soura, Srinagar. The assessment of knowledge was done by using a self-structured interview schedule. Results: The pre-test showed that 88% of respondents had inadequate knowledge, 12% had moderate knowledge, and none had adequate knowledge. Post-test showed that 78% had adequate knowledge, 22% had moderate knowledge, and none had inadequate knowledge. The mean post-test knowledge score of the study subjects was significantly higher than the mean pre-test knowledge score at 0.05 level of significance. There was a non-significant association of pre-test knowledge scores of study subjects regarding the management of febrile convulsions with their selected demographic variables. Conclusion: Majority of the study subjects had inadequate knowledge regarding the management of febrile convulsions which indicates that they need to gain awareness about the management of febrile convulsions. An increase in the knowledge of participants was seen after the administration of the structured teaching programme.