This study discusses the meanings of school violence, and the United States’ present situation of campus violence, collected the campus violence and policy applications in Florida and New York. According to the violent incidents and campus policies in the two states, the violent incidents and campus policies are divided into four categories: campus security, cyberbullying, student bullying, and sexual harassment, data visualization processing is conducted. After the data analysis of the visualization chart, it is found that there is a negative correlation between campus violence and campus policies, and the correct use of different types of campus policies can reduce the occurrence of corresponding violence.