Gas target detection device

The utility model relates to a gas target detection device which structurally comprises a shell, a gas inlet and a gas outlet are formed in the shell, a gas channel is arranged in the shell, one end of the gas channel is communicated with the gas inlet, the other end of the gas channel is communicated with the gas outlet, a Raman probe is arranged on the shell, and the front end of the Raman probe extends into the gas channel. A gas channel is formed in the shell, a supporting tray is detachably mounted on the shell, the end part of the supporting tray extends into the gas channel, an SERS (Surface Enhanced Raman Scattering) base is arranged at the end part of the supporting tray, the SERS base is positioned at the focal position of the Raman probe, and a micro gas pump for driving gas to flow along the gas channel is arranged in the shell. The device is small in size, convenient to carry, convenient to use, convenient to use in a long distance, high in target molecule adsorption capacity, high in detection s