More than 20 years ago, the pre hospital first aid training of the US military battlefield has been imitating the local first aid training courses. Those first aid rules were formed in the local medical background and lack tactical factors. When it is applied to the battlefield, the first-line rescue personnel are often overwhelmed in the face of tactical and medical conflicts. Therefore, the U.S. military realizes that it is necessary to establish a set of battle rescue rules that meet the requirements of actual combat. In 2001, the US Department of defense organized the establishment of the TCCC Committee. The committee is part of the United States national joint trauma first aid system. The first chairman is colonel Butler. The Committee has 42 members. In addition to trauma surgeons, emergency physicians, operating room doctors and medical education experts, it also includes front-line combat medical guards of the US Army, navy and air force. At present, TCCC, the latest war injury rescue rules, is widely used. The U.S. Army, Navy, air force, Marine Corps, coast guard, most allied forces, NATO forces and some other countries take TCCC as a formal battlefield pre hospital first aid course. TCCC is a necessary battlefield tactical rescue course for the U.S. military. At present, the TECC applicable to police and civilian tactical rescue on the market has been expanded and increased to a certain extent.