An electronic device with an elevating mechanism includes a body and the elevating mechanism connected with the body. The elevating mechanism includes a support base, an elevating element, and a fastening element. The elevating element capable of moving between a first position and a second position relative to the support base is connected with both the support base and the body. The elevating element includes a first wedging component. The fastening element disposed around the second position relative to the support base is rotatable between a third position and a fourth position. The fastening element includes a second wedging component. When the fastening element is rotated to the fourth position, the second wedging component is wedged on the first wedging component for fastening the elevating element at the second position.