INTRODUCTION: A tracheostomy is an artificial opening in the neck [into the trachea(windpipe)]. This opening is called stoma. It allows air to go in and out of the lungs. It also allows any mucus to be removed. A small tube (tracheostomy tube) is inserted through this opening. breathing occurs. through this tube. AIM:-The aim of the study is to assess the knowledge of students regarding tracheostomy care. MATERIAL &METHOD: In the present study pre-experimental design were used. A self-structured knowledge questionnaire was developed & utilized for data collection. 50 Nursing students were selected by using non probability convenient sampling method. The conceptual framework adopted for the study was based on Ludwig Von Bertalanffy 24 (1968) theory. The research design used was pre-experimental design. The study was conducted in Maharaja Agrasen Nursing College, Bahadurgarh. VARIABLE: The dependent variable of the study is the knowledge of students regarding tracheostomy care. RESULT: The mean pre-testscore 15.3 on level of knowledge regarding tracheostomy care is lower than post-test 19.1 with the mean difference of 3.8. The obtained mean difference was found to be statistically as evident from obtained z value (0.801) which is less than the tabled z test value. •There is high positive correlation between pre-test and post-test knowledge score regarding tracheostomy care. •There is no significant relationship between the knowledge score and the demographic variable except course in which enroll and place of living.