Traditional　semiconducting　metal　oxide-based　gas　sensors　are　always　limited　on　low　surface　areas　and　high　operating　temperatures.　Considering　the　high　surface　area　and　high　stability　of　zeolitic　imidazolate　framework　(ZIF),　ZIF-67　(surface　area　of　1832.2　m2　g-1)　was　first　employed　as　a　promising　formaldehyde　gas　sensor　at　a　low　operating　temperature　(150　°C),　and　the　gas　sensor　could　detect　formaldehyde　as　low　as　5　ppm.　This　work　develops　a　new　promising　application　approach　for　porous　metal-organic　frameworks.　©　2014　American　Chemical　Society.