The embodiment of the invention provides a power supply management device and a power supply system. The power supply management device comprises a power supply output port group used for outputting a power supply voltage, wherein the power supply output port group comprises a plurality of DC-to-DC power supply dynamic adjustable output ports and a plurality of DC-to-DC power supply dynamic unadjustable output ports. The power supply management device also comprises a plurality of reference voltage input ports which respectively correspond to the DC-to-DC power supply dynamic adjustable output ports and the DC-to-DC power supply dynamic unadjustable output ports, second divider resistors are arranged between the at least one DC-to-DC power supply dynamic adjustable output port and the reference voltage input ports corresponding to the DC-to-DC power supply dynamic unadjustable output ports, and first divider resistors are arranged between the reference voltage input ports and linear power supply dynamic adjustable output ports in the linear power supply output port group; and the reference voltage input ports are grounded through pull-down resistors, thus DC-to-DC is dynamically adjusted through an adjustable power supply LDO (Low Drop Output).