INTRODUCTION: Choking, ie airway obstruction, is a life-threatening condition that requires a quick reaction and urgent care of the person's airway. It is a very common reason for visiting emergency medical services and is considered to be the leading cause of death in infants. Airway obstruction can be partial, complete, and threatening complete. It can cause milder and more severe symptoms and signs, and as such manifests itself as mild and severe obstruction. First aid procedures are applied depending on the symptoms and signs present, and are performed differently in children and adults. Cough stimuli, blows to the back, pressure on the abdomen (Heimlich grip), and resuscitation procedures in severe conditions are applied. After successful clearance of the airways from a foreign body, a doctor's examination is required to see for possible consequences or complications. RESEARCH OBJECTIVE: Assess the knowledge of nursing students about providing assistance to a person with a foreign body in the airway. To determine the impact of high school and college education on students' knowledge of choking assistance. Compare the difference in knowledge between students of the first, second and third year of undergraduate professional study of nursing. MATERIAL AND METHODS: The research was conducted at the Faculty of Health Studies, University of Rijeka. The study involved 69 full-time nursing students, of whom 18 (26,1%) were first-year students, 27 (39,1%) second-year students, and 24 (34,8%) third-year students. An online survey questionnaire, developed through the Google Forms platform, was used to collect the desired data, consisting of four groups of questions developed by the author of this paper. Statistical processing of the obtained data was performed using a personal computer. The collected data were processed and analyzed in Microsoft Excel using spreadsheets, and described by frequency, ie percentage. RESULTS: There is a significant difference in the accuracy of the answers between the first (65,9%), second (74,6%) and third (79,5%) year. The research yielded data indicating that second- and third-year full-time students have greater knowledge and willingness to provide assistance in airway obstruction. The reason for this is, most of all, listening to two important courses, Emergency Medicine - Nursing Approach and Anesthesiology, Resuscitation and Intensive Care, where knowledge and skills are renewed and further expanded. CONCLUSION: From the results obtained by this research, it is evident that most respondents are aware of the importance of providing assistance to persons with a foreign body, and the occurrence of potentially dangerous conditions if assistance is not provided in time. Respondents have mastered specific knowledge, and know how to apply the procedures that are performed in severe airway obstruction, but it is necessary to single out the implementation of procedures in mild airway obstruction, where additional training is required. It is of great importance for continuous education and renewal of knowledge and skills, not only of students, but also of all health professionals.