With the development of infrared technology, cooled infrared detectors are playing an increasingly important role in gas detection. This paper introduces research on infrared gas detectors, domestically and abroad, and expounds on the recent research progress of Zhejiang Juexin Microelectronics Co., Ltd. on VOC gas detectors. The detectors were manufactured using a narrow bandpass filter design, stray radiation suppression, and detector assembly process technology. Moreover, a systematic performance evaluation and analysis of the detector were performed, and the actual imaging was displayed.