This paper aims to explore the relationship between parenting style, emotional regulationand aggressive behavior, emotional regulation and aggressive behavior of elementary pupils; Methods:Simple parenting questionnaire (S-EMBU-C); The Buss-Perry Aggression Scale (BPAQ) and the JuvenileEmotional Regulation Questionnaire (ERQ) tested 700 primary school students in the urban and ruralfringe; Results: (1) Parenting style, emotional regulation and aggressive behavior in terms of gender, gradeand age, There are significant differences; (2)Fathers’ parenting style and emotional regulation (r=0.141,p<0.01), aggressive behavior (r=0.189, p<0.01) and a significant positive correlation; Maternal parentingstyle and emotional regulation (r=0.177, p<0.01), aggressive behavior (r=0.251, p<0.01) and a significantpositive correlation; Emotional regulation and aggressive behavior (r=-0.094, p<0.05) was a significantnegative correlation; (3) Emotional regulation Between the parenting style and the aggressive behaviorof senior primary school students, It has a partial mediation effect; Conclusion: (1) Parenting style andemotional regulation are significantly associated with the aggressive behavior of senior primary schoolstudents; (2) Positive parenting style (such as emotional warmth) can reduce aggressive behavior in seniorelementary school students, Negative parenting style (such as overprotection and rejection) will increasethe aggressive behavior of senior pupils; (3)Emotional regulation has a partial intermediary role betweenparenting style and the aggressive behavior of senior primary school students; Adolescents may reducetheir aggressive behavior by improving cognitive reappraisal.