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This invention relates to the field of power electronics technology, specifically to a switching relay control circuit and control method. The switching relay control circuit includes a signal control module, a power drive module, and a protection module. The signal control module receives an input control signal and outputs a drive signal. The power drive module responds to the drive signal by applying a first voltage to the relay coil to activate it, and automatically reduces the first voltage to a second voltage to maintain the activated state after activation. The second voltage is higher than the relay release voltage. The protection module provides unidirectional protection and voltage clamping for the circuit. This invention enables rapid and reliable relay activation, significantly reduces holding power consumption, and improves the circuit's anti-interference capability.