Basic　level　advantage　effect　in　human　cognition　suggested　there　was　a　more　readily　accessible　cognitive　status　to　the　human　mind　than　others　during　information　retrieval,　but　the　phenomenon　of　advantage　effect　switching　to　superordinate　level　suggested　basic　level　would　not　always　a　sufficient　way.　Processing　demands　of　tasks　might　explain　the　discrepancy　between　basic　and　superordinate　precedence.　In　this　study,　we　used　word-picture　matching　task　and　picture-word　matching　task　with　same　materials　to　investigate　the　neural　systems　of　basic　level　advantage　and　its　switching.　Results　showed　that　more　activation　in　the　area　of　fusiform　and　lingural　gyrus　in　word-picture　matching　task,　suggesting　a　visual　perceptual　processing　loaded　more　in　this　task;　while　more　activation　in　left　inferior　frontal　gyrus　in　picture-word　matching　task,　suggesting　a　semantic　memory　relied　more　in　this　task.　These　contrast　analysis　revealed　different　processing　strategies　across　the　two　tasks　which　led　to　different　advantage　effect.　Furthermore,　the　inferior　parietal　lobe　played　an　important　role　for　the　advantage　effect　during　information　retrieval,　with　weakest　deactivations　appeared　in　the　superordinate　level　in　word-picture　matching　task　and　in　the　intermediate　level　in　picture-word　matching　task,　which　might　served　as　a　control　or　centralized　system　to　integrate　all　kinds　of　cognitive　resources.　©　2010　Springer-Verlag.