Electromagnetic stitch tension control device

The invention relates to an electromagnetic type sewing thread tension control device which comprises a base, an electromagnet, a thread guide rod, an abutting rod, a push plate, two thread clamping pieces, a check ring and an electrical control assembly, and the electromagnet is fixed to the base and comprises a body and an iron core; the lead rod is fixed on the base and is provided with a center hole; the abutting rod penetrates through the center hole and corresponds to the iron core. The push plate is sleeved with the wire rod and is provided with a block body for the abutting rod to abut against. The two thread clamping pieces are sleeved on the thread guide rod in a mutually overlapped manner and are formed on one side of the push plate, and the sewing thread is arranged between the thread clamping pieces; the retainer ring is arranged on the lead rod; the electrical control assembly is electrically connected with the electromagnet, and when the electromagnet is powered on by the electrical control ass