自杀行为主要包括自杀意念、自杀企图和自杀完成。流行病学调查结果显示，男男性行为者（MSM）自杀风险较高。影响MSM自杀的因素包括人口学因素、社会心理因素和行为因素等。少数人压力理论为研究各影响因素的相互关系及阐明MSM自杀行为的发生过程提供了参考。目前较为成熟的自杀心理模型有自杀的痛苦呼救及图式评估模型、综合认知模型、内外二阶攻击模型、人际理论模型、动机-意志整合模型等，但尚未用于MSM人群检验。未来可以整合MSM自杀影响因素，结合少数人压力理论及自杀理论模型，进一步探究MSM的自杀机制。

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.