In recent years,globalization and the pattern of global governance have been hit by systemic shocks,with piling fermentation of traditional security and non-traditional one,and cross heating up of hotspot issues and difficult ones.Against this background,it is timely for the BRICS countries to enhance cooperation on political security and improve global governance system,which however also faces unprecedented challenges.It is necessary for BRICS political security cooperation to appropriately handle internal and external contradictions,innovate on thinking,and build the BRICS cooperative mechanisms into a multidimensional cooperative framework led by the BRICS summit meetings and supported by political security cooperation,economic cooperation and people-to-people exchange.