Enhanced gas detection sensor

The invention discloses an enhanced gas detection sensor, which comprises: a gas enrichment device, which comprises a gas adsorption part with a gas adsorption function and a heating unit for heatingthe gas adsorption part; and a gas sensor, wherein the detection end of the gas sensor is arranged close to the gas adsorption part, and the gas sensor can detect to-be-detected gas released after thegas adsorption part is heated by the heating unit. During working, the gas enrichment device is in a low-temperature state firstly, the gas adsorption part can adsorb gas to be detected in air for along time, when adsorption reaches a certain degree, the heating unit is used for rapidly heating to a specified high temperature, and after the gas adsorption part is heated, the adsorbed gas is completely released within an extremely short time; and the gas enrichment device and the gas sensor are positioned in the same small cavity, so that the concentration of the gas can be increased by hundreds of times in a short tim