The invention relates to a wire coil, and in particular to a surface closed double-layer isolation glue-free environmental-friendly wire coil. The wire coil comprises a wire coil base, an upper layer of coil, a lower layer of coil, a magnetic strip, a wire clamping frame and a magnetic strip cover. The wire coil base, the wire clamping frame, the coils and the magnetic strip are all ingeniously fixed through the magnetic strip cover, a conventional coil gluing and magnetic strip gluing mode is changed, a gluing technology is dispensed technologically, glue is not used, so that the wire coil is more environmental-friendly, moreover, the coils between laminations are isolated from each other through the wire clamping frame, so that the laminations can be effectively prevented from generating short circuit, and the wire coil is simple and compact in structure, and is convenient to install; and the magnetic strip adopts a triple-section type magnetic strip and is fixed through only one step, the magnetic strip of a scrapped wire coil can be directly dismantled for recycle, so that the production efficiency is increased, and the production cost is lowered.