The aim of this Study was to Assess the effect of planned mobilization on indexes of Care improvement in patients undergoing cardiac Surgery .This study is a randomized controlled clinical trial in patients undergoing coronary artery bypass surgery. A total number of 100 patients who had inclusion criteria ( stable hemodynamic; fully consciousness; and limited drainage), for this study were randomly assigned in control and Exprimental groups. After obtaining the written informed consent from all patients, the patient in experimental group, were trained about the benefits of faster mobilization and complications of long-term effects of inactivity. After transferring the patient from the operating room to the intensive care unit and extubation, patients who were fully alert, hemodynamically stable without inotropic support, and had respiratory stable condition and limited drainage, the intervention was carried out. In the first day the program was consisted of sitting at the edge of the bed, stand and then walk 10 meters in the morning and afternoon of the second day, and followed by thirty meters walking in the third day two times (morning and evening). In the control group we had no intervention and patients received their routine care and were mobilized in the third post operation day, after drain removal. Then patients were compared based on care improvement indexes such as atelectasis, pleural effusion, and hospital stay. chest x ray was interpreted by a anesthesiologist who were blind to the patients allocation in groups.