Abstract: Mid- and long-infrared detector based on antimonide type-Ⅱ superlattice has drawn extensive attention and research due to its excellent performance. The detection mechanism, material structure, device performance and current application of antimonide type-Ⅱ superlattice detectors are reviewed. Additionally, the research progress of type-Ⅱ superlattice in mid- and long-infrared avalanche photodiodes is also introduced. Some indicators of the antimonide type-Ⅱ superlattice detectors have approached, or even exceeded those of the HgCdTe detectors. Such superlattice detectors have been applied in some infrared equipment. Avalanche photodetectors based on antimonide type-Ⅱ superlattice are still in their infancy in the field of mid- and long-infrared week light detection. On the other hand, they show great development potential when compared with HgCdTe avalanche detectors.