Alternating current LED lamp filament and lamp filament lamp

The invention discloses an alternating current LED lamp filament and a lamp filament lamp. The alternating current LED lamp filament comprises a substrate, a terminal, an LED chip, a first resistor, a diode and packaging glue, visible light can penetrate through the substrate, the upper surface and the lower surface of the substrate are provided with a first circuit layer and a second circuit layer respectively, the second circuit layer is at least in metal connection with the first circuit layer, and a plurality of connection modes exist, so that heat emitted by a divider resistor is dispersed to the two sides of the upper surface and the lower surface of the substrate instead of being purely gathered on the upper surface of the substrate, heat gathering is avoided, the temperature of the resistor body is effectively reduced, packaging glue degradation caused by local high temperature in the lamp filament is avoided, and the high-reliability alternating current LED lamp filament is achieved. The invention fu