To explore the influence of parental attachment on middle school students′ subjective well-being and the chain mediating effects of teacher-student relationship and self-esteem,2730 middle school students from 8 General Secondary Schools in Beijing were investigated with the inventory of Parent Attachment,Student-Teacher Relationship Scale,Rosenberg Self-Esteem Scale,the Positive and Negative Affect Scales,and Satisfaction with Life Scale.The results reveal that:1) Parent attachment,teacher-student relationship,self-esteem and subjective wellbeing correlated significantly with each other.2) Parent attachment could exert effects on subjective well-being directly,also through the mediating effect of teacher-Student relationship,self-esteem,and the chain mediating effect of teacher-student relationship and self-esteem.