In order to realize the absorption frequency controlling of metamaterials absorber intelligently，a dual-band metamaterials absorber is designed in this paper firstly，and then the electrorheological fluid is loaded in the dual-band metamaterials absorber，and the absorption frequency of dual-band metamaterials absorber is tunable by changing the electric field strength applied on electrorheological fluid. The results show that the designed metamaterials absorber has two absorption peaks at 7.403 GHz and 17.511 GHz，and the absorption rate is 99.8% and 70% respectively. With the increase of electric field strength，the absorption frequency gradually moves towards lower frequency，and the absorption frequency regulation rate is up to 55%. Therefore，we propose the concept of dual-band intelligent metamaterials absorber.