Objectives: Our study examined the incidence of insomnia among Chinese medical professionals, delved into associated factors, and examined its connection with Traditional Chinese Medicine (TCM) diagnostic elements. Methods: Between January 2020 and December 2022, our evaluation included 621 medical personnel, utilizing the Pittsburgh Sleep Quality Index (PSQI). Our team gathered data on demographics and occupations to pinpoint potential risks linked to insomnia. Furthermore, the components of TCM syndrome were assessed to understand their correlation with the quality of sleep. Results: Overall, 523 staff were classified as experiencing insomnia (PSQI score ≥ 8). We found statistically significant differences age, professional title, abnormal menstruation, night shift assignment, work intensity, and years of service between insomnia and non-insomnia groups. Logistic regression analysis revealed age over 40, senior professional title, night shift assignment, and high work intensity as risk factors for insomnia, while longer tenure was protective. Insomnia patients predominantly exhibited TCM syndromes such as phlegm-heat internally, heart-fire hyperactivity, and liver-depression fire. Conclusion: Our results reveal a high prevalence of insomnia among medical staff and its association with various demographic and occupational factors. They underscore the relevance of TCM syndrome elements in understanding sleep disorders and suggest personalized interventions targeting specific syndromes. Effective management of insomnia in medical staff is crucial for promoting both individual well-being and patient care quality.