The invention discloses a flexible plane embedded laminated electrode, a preparation method of the electrode, and an application of the electrode in an organic single crystal field effect transistor. The preparation method comprises the following steps of connecting octadecyl trichlorosilane on the surface of a substrate, preparing a source electrode, a drain electrode and a grid electrode on the modified substrate, connecting mercapto propyl trimethoxy silane on metal electrode surfaces of the source electrode, the drain electrode and the grid electrode by a vapor phase method, spincoating polydimethylsiloxane on the metal electrode surfaces of the obtained source electrode, the drain electrode and the grid electrode, transferring the grid electrode spincoated with polydimethylsiloxane from the substrate, performing oxygen plasma treatment on the metal electrode surface of the grid electrode and polydimethylsiloxane surfaces of the source electrode and the drain electrode, forming hydroxy on the surfaces, cutting the source electrode and the drain electrode, and connecting the grid electrode, the source electrode and the drain electrode to form a whole. According to the flexible plane embedded laminated electrode, the preparation method and the application, a semiconductor, the electrode and an insulating layer are bonded together by action of electrostatic adsorption, so that recycling of the electrode can be achieved, and the electrode is suitable for organic single crystals in various dimensions.