Abstract: After the professionalization reform of the fire rescue team, the composition of the grassroots fire and rescue personnel has become more diversified, and the factors affecting the psychological health of grassroots fire and rescue personnel have become more complex. To study the differences in psychological problems after rescue operations of different types of personnels, this article uses the Symptom Self-Rating Scale (SCL-90) to conduct a questionnaire survey to statistically analyze the mental health status of different types of grassroots firefighters from demographic angles. The results show that obsessive-compulsive symptoms are the most prominent in the 10 factors of the self-rating scale. Using the SPSS analysis software, the article analyzes the differences in obsessive-compulsive symptoms among different fire and rescue personnels. The results show that the differences are significant in marriage and rank. Combining with the in-depth interviews and discussions, the article speculates that it is related to the characteristics of the firefighting profession, the article puts forward corresponding countermeasures.

Key words: demography, fire and rescue personnel, psychological health, differentiation