The invention provides a sewing machine with a rotary LED (Light Emitting Diode) lamp, which comprises a sewing machine main body, a belt pulley, a machine needle oscillating rod and a to-be-sewn line, wherein the machine needle oscillating rod is mounted on the upper part of the sewing machine main body; a machine needle is mounted at the bottom of the machine needle oscillating rod; the belt pulley is arranged on the lower part of the sewing machine main body; two lifting pressing cams are arranged on the sewing machine main body; the to-be-sewn line enters from one side of the sewing machine main body, and then successively passes through a first lifting pressing cam, the machine needle oscillating rod, the machine needle, an inner executing mechanism and a second lifting pressing cam, and lastly exits from the sewing machine main body; a lamp holder is arranged on the bottom side of a machine head of the sewing machine main body; and the rotary LED lamp and a photosensitive sensor are mounted on the lamp holder. According to the sewing machine with the rotary LED lamp designed by the invention, the photosensitive sensor on the sewing machine is used for confirming a to-be-illuminated position, and then the LED lamp is automatically rotated to the corresponding position for illuminating.