Embodiments of the present invention relate to electronic devices and data transmission methods. The electronic device includes: a first part including a first main board, a first processor connected to the first main board, at least one sharable hardware component and a first connector; and a second part including a second main board, a second processor connected to the second main board and a second connector corresponding to the first connector. The first part and the second part are connectable to each other via the first connector and the second connector. The first connector is configured to receive, from a first driving module of the hardware component, a first data sent from the hardware component via a first connector driving module, and transmit the first data to the second connector such that a second connector driving module can provide the first data from the second connector to a first application running in the second part via a second driving module of the hardware component. The present invention realizes simple and effective sharing of hardware component.