Objective To understand the psychological situation in military patients before radiofrequency ablation (RFA), and provide the psychological evidence for the integrated therapeutic mode for arrhythmia. Methods The military patients (n=169) with planned radiofrequency ablation were chosen, and given pre-operation psychological assessment by applying SCL-90 and the outcomes were compared with military norm. The relationship among demographic information, troops (frontier forces, combat forces, Beijing forces and sanitarium for retired cadres), types of arrhythmia and disease awareness and factors of somatization, anxiety, depression and phobia in SCL-90 was analyzed by using Logistic regression. Results The scores of factors of somatization, anxiety, depression, compulsion and phobia in SCL-90 were higher in the military patients compared with military norm before RFA, and somatization was more significant in the patients with pre-excitation syndrome and paroxysmal supraventricular tachycardia than those with other diseases. The probabilities of somatization and anxiety were higher in the patients with lower disease awareness. Anxiety, compulsion and phobia were more common in the patients from frontier forces, and phobia was common in the patients aged from 17 to 30 and compulsion was common in those aged from 31 to 50. Conclusion The military patients generally have psychological disorders before RFA, especially lower disease awareness. Anxiety was more common in the patients from frontier forces, and the characteristics of psychological disorders are different in differently aged patients.