The invention discloses a docking device and a charging management method thereof, including a first connection port, a second connection port, at least one peripheral equipment connection port, a power converter, a temperature sensor and a processor. The first connection port and the second connection port are both USB Type-C connectors, connected to a host and an external power respectively. When a real temperature value sensed by the temperature sensor rises to an upper temperature threshold, the processor controls the first connection port, the second connection port, and the peripheral equipment connection port coordinately according to USB-C power delivery protocol, requests an input voltage of the second connection port to be equal to the peripheral device voltage, and transmits the input voltage to the peripheral equipment connection port via the power converter. Neither does the power converter generate conversion loss nor does the docking device increase power loss and heat.