An electronic device includes a tablet module and a docking base. The tablet module includes a slot, a sliding element and a plurality of first attracting elements. The sliding element is slidably disposed in the slot. The first attracting elements are adjacently disposed on the sliding element and have a first attracting side. The polarities of each two adjacent first attracting elements at the first attracting side are different. The docking base includes a bearing sheet and a plurality of second attracting elements. The bearing sheet is inserted to the slot and abuts against the sliding element. The second attracting elements are adjacently disposed on the hearing sheet and have a second attracting side. The polarities of each two adjacent second attracting elements at the second attracting side are different.