Suicidal behaviors mainly include suicidal ideation, suicidal attempt, and suicide completion. Epidemiological studies suggest that men who have sex with men (MSM) are at a high risk of suicide. Factors influencing the suicidal behaviors of MSM include demographic, psychosocial, and behavioral factors. Minority stress theory provides references for studying the interaction between influencing factors and elucidating the development of suicidal behaviors in MSM. Currently mature psychological models of suicide include Cry of Pain and Schematic Appraisal Model of Suicide, The Comprehensive Cognitive Model, Two-Stage model of Outward and Inward Directed Model, Interpersonal Theory of Suicide, Integrated Motivational-Volitional Model of Suicidal Behavior, and so on. However, none of them has been applied to MSM. Influencing factors, minority stress theory, and theoretical models of suicide can be combined to further study the suicidal mechanisms in MSM.