The present invention provides an electrically driven toothbrush, which comprises a hollow handle, an electrical assembly module in electrical connection with a pair of spring and a cap member. The hollow handle includes a first end provided with a tooth brushing portion and a second end provided with an opening. The electrical assembly module in electrical connection with the spring is inserted into the hollow handle through the opening. The cap member is removably attached to the hollow handle through and closes the opening. By bending the cap member, two spring coils of the pair of spring make contact with each other so as to conduct an electrical path to the electrical assembly module for turning on the electrically driven toothbrush structure. By designing the proposed structure of the present invention, it successfully achieves the purpose of improving and enhancing the conveniences of use for users.
