In military laser countermeasure, reconnaissance and detection systems and guided weapons usually use image sensors to achieve precise control. In recent years, how to use high-energy laser weapons to accurately strike enemy sensing systems has become a research hotspot. From the damage effect of short pulse lasers with highpeak power on the charge coupled device (CCD) and complementary metal oxide semiconductor (CMOS) sensor, us.ing the hundreds picosecond laser obtained by stimulated Brillouin scattering (SBS) pulse width compression tech.nology as an electro-optical countermeasure weapon is proposed. The principle and research progress of SBS pulse width compression are introduced and the application prospects of hundreds picosecond lasers in electro-optical countermeasures are analyzed.