Shift register, gate drive circuit, array substrate and wearable device

The invention provides a shift register, a gate drive circuit, an array substrate and wearable equipment, and belongs to the technical field of wearable equipment. The shift register comprises an input sub-circuit (1), a reset sub-circuit (2), a pull-down control sub-circuit (4), a pull-down sub-circuit (5), an output sub-circuit (3), a first noise reduction sub-circuit (61), a second noise reduction sub-circuit (62) and an auxiliary noise reduction sub-circuit (8), and the auxiliary noise reduction sub-circuit (8) is configured to perform noise reduction on the output of the signal output end (OUTPUT) through a first power supply voltage (VGL) in response to a second clock signal (CLKB).