The purpose of this article is to explore the mediating role of conscientiousness between
parenting style and online altruistic behavior. Using the Parent Parenting Style Scale, the Big Five
Personality Scale Conscientiousness Dimension, and the Network Altruistic Behavior Scale, a
questionnaire survey was conducted on 420 high school students in a high school in Guangxi. The results
showed that: (1) There were significant differences in family origin in the family origin of the participants’
fathers (t=2.95, p<0.01), maternal emotional warmth (t=2.69, p<0.01), and maternal overprotection
(t=2.26, p<0.05), and the scores of urban students were significantly higher than those of rural students;
(2) There is a significant gender difference in online altruistic behavior (t=-2.11, p<0.05), and girls
score significantly higher than boys; (3) Conscientiousness acts as a complete intermediary between
parental refusal and online altruism; Conscientiousness plays a partly mediating role between parental
emotional warmth and online altruistic behavior; Conscientiousness does not mediate between parental
overprotection and online altruism.