Abstract: Objective To analyze the prevalence and influencing factors of suicide behaviors among migrant service workers in Shenzhen city. Methods Totally 1 982 migrant service workers were recruited with respondent-driven sampling in Shenzhen city of Guangdong province and surveyed with General Health Questionnaire (GHQ-12), Connor-Davidson Resilience Scale (CD-RISC), Generalized Anxiety Disorder-7 (GAD-7), Center for Epidemiologic Studies Depression Scale (CES-D), and Perceived Social Support Scale (PSSS) between June and August 2014.Structural equation model was used to explore relationships between suicidal ideation and influencing factors. Results The average age of the 1 979 migrant service workers with valid information was 39.9±12.0 years and the majority of the workers were female (65.1%), married (83.8%), and with the primary school education (43.3%).The prevalence of suicidal ideation, plan, and attempt among the migrant service workers were 3.1%, 0.4%, and 0.3%, respectively.The constructed structural equation model fit the data well (χ²/df=17.828, normed fit indexNFI=0.959, comparative-fit indexCFI=0.961, incremental fit indexIFI=0.961, root mean square error of approximationRMSEA=0.092, Akaike information criterionAIC=164.793, Brownne-Cudeck criterionBCC=164.935, estimated cross validation indexEVCI=0.083).Depression showed direct influence on suicidal ideation, while other factors including psychological status, psychological resilience, anxiety, and social support had indirect impacts.According to the percentage of the contribution, the negative influencing factors were ranked as following:depression (46.2%), anxiety (28.9%), psychological status (24.2%), and social support (0.1%).The psychological resilience (0.6%) was a positive influencing factor. Conclusion Depression and anxiety are the most important risk factors of suicidal ideation among migrant service workers in Shenzhen city, suggesting that screening on depression and anxiety may be a major measure for suicide prevention in the population.