Since the rapid social progress and overall value change in recent years, a substantial number of children are experiencing an unstable and changeable course of development. Besides, living in a society of media violence and eroticized computer games, children are easily to learn directly or indirectly from peers and derive various types of delinquent behaviors. Insignificant one is like lying, playing truant and openly resisting, and serious one is like stealing, rubbery and assault. If the early childhood delinquent behaviors could not be restrained timely, it can be transformed into criminal behaviors in the future. Till then, not just the public security will be getting worse and the entire society will definitely pay a huge amount of cost. It is not an acceptable outcome for anyone. This study focus on understanding the influence factors of family type and parent disciplinary attitude on delinquent behaviors of higher graders of elementary school in present stage. A questionnaire survey was conducted in this study to examine the grade 5th and 6th students of elementary schools in New Taipei City. 1243 effective samples were gained and analyzed by applying methods as: descriptive statistics、independent-samples t test、multiple regression analysis and path analysis. The findings of this study were as following: 1. The elementary school higher grader students of New Taipei City sensed that the parent disciplinary attitude focused on “demand” level more than on “response” level. 2. The type of enlightened authority took the highest percentage in the parent disciplinary attitude of New Taipei City elementary school higher grader students. 3. There were no magnificent differences between grade and sex for New Taipei City elementary school higher grader students to sense parent discipline attitude, but there were obvious differences between receiving different sex parent discipline and living in different type family students. 4. The level of delinquent behaviors of New Taipei City elementary school higher graders were belonged to insignificant ones. 5. The contrary delinquent behavior of New Taipei City elementary school higher graders was higher than in-risk juvenile delinquent behavior and crime delinquent behavior. 6. Boy students of New Taipei City elementary school higher grades performed seriously on delinquent behaviors than girls students. 7. The New Taipei City elementary school high graders caused less delinquent behaviors by receiving female parents’ disciplinary than male parent. 8. The parents disciplinary attitude and students delinquent behaviors of New Taipei City elementary school high graders were negative correlation. 9. “Concerning and protecting”, “strict disciplinary” and “interpersonal demanding” of parents disciplinary attitude were predictable to overall students’ delinquent behaviors. Lastly, according the result of this study, keeping a harmonious family relationship and to form a constructive disciplinary attitude was recommended to parents. Also, thoroughly implementing student counseling system was suggested to school to help students for establishing positive value to reduce the chances for delinquent behaviors producing in their growing process and not to effect career development in their future.