The study of second-order nonlinear optical crystalline materials in the infrared region is one of the important, difficult, and hot topics in the fields of lasers and nonlinear optics. As the available ones are far from the market’s requirements, it is necessary to explore novel infrared nonlinear optical materials from the origin. Chalcogenides and halides are the most important candidates for infrared nonlinear optical materials. Chalcogenides usually present large second-harmonic generation effects and wide infrared windows, and halides usually have large optical band gaps, namely, high laser-induced damage thresholds. Combining their advantages, it is possible to obtain new infrared nonlinear optical materials with desirable properties. Based on this background, this work summarizes the recent status and progress on chalcohalide-type infrared nonlinear optical materials, including halides containing S8 unit, salt-inclusion chalcohalides, and Ba-based chalcohalides. Most of these chalcohalides powder samples exhibit nice NLO properties. The opportunity and importance of the future investigation on this topic are also proposed.