Objective To address the mediating role of cognitive emotion regulation in the relationship between parenting styles and health risk behavior in left-behind children. Methods A total of 404 leftbehind children were surveyed with the egna minnen av barndoms uppfostran ( EMBU),the cognitive emotion regulation questionnaire-Chinese version ( CERQ-C) and the adolescent health related risky behavior inventory (AHRBI). Results (1) The whole average score of AHRBI was (1.47±0.24); the scores of positive and negative cognitive emotion regulation respe...