A gas detecting and purifying device is disclosed and comprises a supporting frame and a gas detector, the gas detector is disposed within the supporting frame. The gas detector comprises a main body, at least one gas detecting module, at least one particle detecting module and at least one gas purifying module； the gas detector which is disposed within the supporting frame can purify ambient the gas around a user, thereby to prevent from the injury and ill influence on human health caused by the exposure of the air pollution in the environment, and the gas detector can provide a gas detecting information, so as to provide an air quality notification mechanism, and the user can take protective actions accordingly.一種氣體監測及淨化裝置，包含：一支撐框體及一氣體監測機，嵌置於該支撐框體中定位，氣體監測機包含：一本體、至少一氣體監測模組、至少一微粒監測模組及至少一淨化氣體模組；藉此該支撐框體上所嵌設氣體監測機來淨化使用者周遭環境之氣體，以降低環境中的空汙氣體暴露所造成人體健康影響及傷害，以及透過該氣體監測機提供氣體監測資訊，進而提供空氣品質通報機制給使用者實施防護措施。
