Recently, two Japanese students studying in China publicly commented on the original explosion in Hiroshima when they released the video of food review in Hiroshima, which caused dissatisfaction and protest in Japan. International students said that the original explosion in Hiroshima could not sympathize with them, and the Japanese did not know much about the truth of the incident. The original explosion museum also specially exhibited children's items to stimulate sympathy. Such remarks have aroused the anger and dissatisfaction of many Japanese people. First of all, foreign students, as public figures, have strong social influence. Their words are not only their own opinions, but also represent the voices of some people. Therefore, it is necessary to carefully consider making such remarks in public, and fully understand what kind of influence your words will have on others. Secondly, the original explosion in Hiroshima was a disaster during World War II, causing tens of thousands of deaths and injuries. Although history has passed for a long time, relevant historical facts and people's suffering still need respect and concern. As international students, when expressing their views, they need to fully consider the historical and cultural background and respect the feelings and experiences of local people. Third, freedom of speech is everyone's right, but it doesn't mean that you can publicly make statements that discriminate and insult others. On the premise of freedom of speech, international students should maintain good quality and social etiquette, respect local people and culture, and avoid hurting others' feelings and emotions. Finally, as international students, we should study the local culture and history harder, and respect and tolerate the local views and cultures. By understanding and experiencing local culture, we can better integrate into local society, improve interpersonal skills and make positive contributions to Sino-Japanese friendly relations. In a word, it needs careful consideration to make controversial remarks publicly to avoid unnecessary misunderstandings and conflicts. As international students, we should pay attention to our words and deeds, respect the local culture and history, integrate into the local society as much as possible, and make efforts to promote friendly exchanges between China and Japan.