Chemical weapons, also known as anti-chemical weapons, are armed forces composed of observation, reconnaissance, decontamination, fire breathing and smoke generation. They are an important armed force of China People's Liberation Army and the main military force of China people. China won the gold medal in the shooting course of the anti-chemical reconnaissance team in the international military competition. On August 8, 20 15, the armies of all countries used their own chemical reconnaissance equipment, which can quickly find the poison and determine the type and infection of the poison, while the chemical defense forces of all countries rely on these equipment for reconnaissance. Chemical reconnaissance equipment refers to chemical reconnaissance, alarm, drug detection, monitoring, laboratory testing and other equipment, which is formulated by state administration of work safety according to the Environmental Protection Law of People's Republic of China (PRC) (hereinafter referred to as the Ministry of Environmental Protection). Its function is to judge whether it is attacked by chemical agents; Determine the type of poison; Roughly determine the exposure concentration; Detecting the diffusion range of the poison cloud; Warning troops; Report relevant data to the command and control center; Guide the troops to take timely protective actions. At present, chemical reconnaissance equipment equipped in various countries includes: poison detection paper, poison detector, poison alarm, detector, monitor, sampling analysis and measurement system, anti-chemical reconnaissance vehicle, reconnaissance motor vehicle, reconnaissance vehicle, anti-gas reconnaissance aircraft, etc. Among them, reconnaissance flight machinery and equipment are mainly used to detect chemical weapons, and the main methods of drug detection are the use of chemicals, chemicals, fertilizers, pesticides, herbicides and so on. For example, the poison and its concentration can be judged by observing whether the reagent is discolored or not, and the chemical reagent sensitive to poison is used for inspection. However, this method requires the use of specific reagents to identify a certain poison, and requires a high professional level of personnel, so people later developed other methods, such as using infrared spectrum detection technology, to detect the existence of a certain poison. The principle of this technology is that when chemical molecules with different structures absorb infrared rays, they will produce different infrared spectra, so we can know the types and concentrations of poisons, because molecular rotation and atomic vibration energy are different. There is also a flame photometric detector, which is specially used to detect chemicals containing phosphorus or sulfur.