Laser remote sensing of natural gas leak detector is based on near infrared diode laser absorption spectroscopy of new high-sensitivity measuring instrument, select the strong absorption lines of methane molecules, free from interference from other gas components, the effective detection range up to 34 m. Measurement, it can point the laser detector under test areas, such as the piping is reflective material, surface, etc. Detector receives reflected back through the leak air mass to measure the reflected laser beam path of the integral absorption of methane gas concentration. The instrument's technology is a world-class, with easy to carry, easy to use, high sensitivity.