Disasters occur frequently all over the world and are difficult to avoid. In addition to evaluating the efficiency of emergency ambulances, disasters may induce posttraumatic stress disorder (PTSD) and impact survivors or affect first responders and rescue personnel indirectly, further delaying the family, community, society, and even the country's post-disaster recovery. Therefore, psychological recovery after a disaster has become an important task in disaster nursing. This article describes the psychological responses of individuals after a disaster, as well as the symptoms, etiology, incidence, and treatment of PTSD. Nurses should conduct early psychological assessments of survivors to detect potential cases of PTSD; then, based on each case, they should use the concepts of family-centered care and push and link with the community to enhance the recovery of the patient, which will accelerate the rehabilitation of the community.