Introduction: It is very important to choose the appropriate teaching method that can cause meaningful, effective and usable learning for learners. The present study was conducted with the aim of investigating the effect of conceptual map on the study approaches of nursing students in intensive care unit internship.
Methods: This is a semi-experimental study, 36 nursing students of Bandar Gaz Azad University, who were doing ICU internship at Hakim Jurjani Hospital in Gorgan in 2023, participated. The students were included in the study by census method and were assigned to two groups of intervention (18 people) and control (18 people) by random number table. The students of the test groups were trained in the ICU department for 40 hours using a concept map. Questionnaires, including demographic information and revised two-factor study approach questionnaire, were completed before the start of the internship and on the last day of the internship by the students of the experimental and control groups. Data were analyzed using Descriptive and analytical statistics (Shapiro-Wilk, U-Man-Whitney and T. Welch tests through SPSS.
Results: The results showed that the average score of the study approach process before the intervention was 65.05 ± 8.18 in the test group and 60.55 ± 2.91 in the control group. Also, the average score of the study approach process in the test group after the intervention (68.83 ± 6.38) was significantly higher than the control group (60.05 ± 2.99) (p=0.02 , t=2.43). 
Conclusion: The score of the study approach process increased in the people who received training with concept map, so the concept map method promotes the meaningful learning of students and can be used in basic lessons that require high-level learning.