As one of the most widely used types of aluminium alloys, cast aluminium alloys often serve in complex andvariable environments. When used in marine or humid atmospheres, these alloys typically exhibit issues such as structuraldegradation and reduced service life due to corrosion. The adoption of appropriate methods to modify their microstructure,thereby influencing the composition and structure of the surface passive film, can enhance their corrosion resistance. Thispaper reviews recent research progress on the corrosion resistance of cast aluminium alloys, focusing on the roles ofalloying elements such as Cu and Si, heat treatment processes, and passive films. Strongly cathodic elements such as Cuand Si can exacerbate galvanic corrosion, while adjusting the composition of secondary phases through microalloying (e.g.,adding trace rare earth/transition metals) or employing solution heat treatment to reduce electrochemically active interfacescan improve corrosion resistance. The failure mechanisms of surface passive films, such as Cl--induced pitting, can beanalysed through various models. Finally, regarding the passive film of cast aluminium alloys, several questions andsuggested future research directions are proposed.