“Multispectral zinc sulfide is widely used in infrared optical guidance heads, optoelectronic detection radars, and airborne optoelectronic pods due to its high optical transmittance in multiple spectral bands such as near, mid, and far infrared. The research progress in the field of infrared optical component processing is introduced. The research team has established an ion beam combination polishing process system and explored process parameter optimization methods to provide a solution to the problem of ultra-high surface precision processing of multispectral zinc sulfide.”