Abstract： Objective To find out the sleep condition of participants under electromagnetic environment,and to an-alyze the influencing factors of stress-induced insomnia and the characteristics of traditional Chinese medicine syndromes.Methods A cross-sectional survey of 300 male participants in an electromagnetic radiation unit was conducted using the cluster sampling method from August 1st,2023 to August 3rd,2023,a total of 297 valid questionnaires were collected,the Pittsburgh sleep quality index(PSQI)score＞7 was used as the diagnostic criterion for stress-induced insomnia,and the participants were divided into stress-induced insomnia group(n=133)and normal control group(n=164).The general data of the two groups were collected.According to the median of the the Ford insomnia response to stress test(FIRST)scores(M=13),the 297 respondents were divided into high-risk(n=142)and low-risk population(n=155),and their PSQI scores were analyzed.The quality of life and fatigue levels of the participants in the two groups were assessed using MOS 36-item short form health survey(SF-36)and fatigue scale 14(FS-14),and their traditional Chinese medicine syndrome were analyzed using the in-somnia traditional Chinese medicine syndrome questionnaire.Results The prevalence of stress-induced insomnia among participants in the electromagnetic environment was 44.78％(133/297).FIRST in a high-risk population in total scores of PSQI score,sleep latency,sleep time,sleep efficiency,daytime dysfunction scores were significantly higher than that of low-risk population(all P＜0.01).The proportion of having history of alcohol consumption and undergraduate or a-bove in the stress-induced insomnia group were significantly higher than those in the normal control group(all P＜0.01);compared with the normal control group,the stress-induced insomnia group had a lower degree of health in both physical component summary(PCS)and mental component summary(MCS)domains,the scores of general health(GH),physi-cal functioning(PF),role physical(RP),bodily pain(BP),role emotional(RE),social functioning(SF),vitality(VT)and mental healith(MH)were lower(all P＜0.01).Multiple linear regression analysis results showed that the history of alcohol consumption,FIRST,PCS and body fatigue were influencing factors of stress-induced insomnia(P＜0.05).The traditional Chinese medicine syndrome analysis showed that the traditional Chinese medicine syndrome scores were 23.00(11.50,36.00)and 1.89(0.00,8.75)in stress-induced insomnia group and normal control group,traditional Chinese medicine syndrome scores in stress-induced insomnia group were significantly higher than those in normal control group(Z=10.900,P＜0.01);the main locations of disease related to insomnia were liver(22 cases),heart(31 cases),kidney(19 cases),spleen and stomach(40 cases),symptomatic factors included Qi deficiency(29 cases),Yin deficiency(18 ca-ses),Qi stagnation(8 cases),phlegm and dampness(16 cases)and excessive fire(51 cases).Conclusion The locations of disease involved in stress-induced insomnia patients in the electromagnetic environment are mainly spleen and stomach,with excessive fire as the most common symptomatic element.Insomnia susceptivity,level of physical fitness and somatic fatigue are influencing factors in stress-induced insomnia,and identifying risk factors for stress-induced insomnia is of par-amount importance to enhance sleep quality among participants.