Fire as a result of special fire-fighting and rescue tasks, handling disasters, and a large quantity of day-to-day training, it is easy to make a special fire in a state of mental fatigue. Firemen special study of mental fatigue situation, ease the fire in the fire-fighting and rescue, disaster disposal, day-to-day training of the mental fatigue generated by a certain degree of guidance. Scale WRFFQ selected in this experiment, as well as psychological self-made questionnaire of 13 provinces and cities in the country 333 firefighters carried out a special study, by the secret police fire in a pre-training, as well as training of police psychological fatigue value data. Through SPSS software to analyze the questionnaire data using T-test statistics and multiple testing methods, the scale of the investigation of the relevant factors in data analysis, results showed that the fire special degree of mental fatigue and general healthy population Compared to the existence of significant differences, a special fire in a police training before and after the degree of mental fatigue, there are also significant differences. However, in age, rank, and other aspects of troops were no significant differences. This study showed that the prevalence of mental fatigue special firemen, and police and a long period of hard training to enhance the degree of mental fatigue. Of the possible causes of mental fatigue further analysis and found that the nature of the work, working environment, work stress, such as special fire on a great influence on mental fatigue. Proposals related to sector reform management systems, to ease the psychological pressure of a special fire; regular occupational health examinations, done on the health status of dynamic management.