Background and objective: The medical students should be trained in BLS/ACLS/PALS in order to attain the skills for emergency patient management. The objective of the study is to compare the knowledge, attitude and practice about BLS/ACLS/PALS among the interventional and non-interventional groups both before intervention and after intervention. Methods: This interventional study was done among final year medical students and house surgeons in six Medical colleges of Northern Kerala.The study subjects were categorized into two groups,Category 1 received an orientation class on BLS/ACLS/PALS and students belonging to category 2 did not receive the orientation class. A pre-validated pretested questionnaire to assess the Knowledge, Attitude and Practice of medical students regarding BLS/ACLS/PALS was distributed after the orientation class.The control group (category 2) who did not receive the orientation class also were given the questionnaire same as that of other group. Results: Total of 608 students participated in this study.Out of which 325 received an orientation class. Unpaired t-test done in pretest among interventional and non-interventional group showed p value>0.01 which implied that both groups were comparable. The mean scores of Knowledge, attitude and practice in the post test increased to 8.111±1.507, 2.328±.743, 2.065±.297 among house surgeons and an increment to 6.260±1.087, 2.277±.474, 1.659±.659 among final years in the interventional group as when compared with the scores of the non-interventional group. Paired t test also showed significant difference among interventional group while there was no change in the non-interventional group.(p>0.05). Conclusion: BLS/ACLS/PALS training among undergraduates can improve the Knowledge, Attitude and Practice of medical students thereby increasing the resuscitation as well as the survival of patients in emergency care. Keywords: BLS, ACLS , PALS, Resuscitation