The V1 Beidou short message handheld terminal developed by Dingjian (Shenzhen) Communication Technology Co., Ltd. can provide real-time positioning and SMS communication functions through Beidou satellites in an environment without a public network. When natural disasters such as earthquakes, floods, tsunamis, and landslides occur, public networks are often paralyzed. At this time, rescuers carry V1 Beidou short message handheld terminals into the disaster area. They can contact the outside world through the Beidou short message function and report the current location and on-site conditions in real time. The command center can make rescue plans immediately based on the on-site conditions to improve rescue efficiency.