Individuals who have experienced a car accident are at a high risk of developing post-traumatic mental health problems, that is, post-traumatic stress disorder (PTSD), which ranges from 10% to 15%. This appears to be due to reactions such as reexperiencing, hyperarousal, avoidance, and paralysis to protect themselves from severe traumatic shock.Symptoms of post-traumatic stress disorder after a car accident include: You may reexperience the trauma through dreams or recurring thoughts, and you may try to avoid situations associated with the trauma or become numb. In addition, the autonomic nervous system is over aroused, so it is easy to startle, lose concentration, sleep disturbance, and increase irritability.To alleviate the above symptoms, it is necessary to minimize the impact of post-traumatic stress disorder through early intervention in patients who have suffered a traffic accident. This app provides information you can accurately understand about post-traumatic stress disorder after a traffic accident, diagnoses the degree of post-traumatic stress disorder by yourself through a chatbot, and helps you alleviate post-traumatic stress disorder while watching a video according to the diagnosis result. We provide a function that can. We hope that many people who have suffered a car accident can quickly get out of post-traumatic stress disorder by using this app.