Charging protection method and terminal equipment

The embodiment of the invention discloses a charging protection method and terminal equipment. The charging protection method comprises the following steps: detecting a fact that a charger is insertedinto a charging port of the terminal equipment, and determining port voltage of the charging port; according to the port voltage and a preset charging current value, determining the current impedanceof the charging port; and under the condition that the current impedance is higher than a preset impedance threshold value, switching the current pin connection of the charger with the charging portinto a target pin connection. The charging protection method provided by the embodiment of the invention can prolong service life of a USB port in the terminal equipment, thereby guaranteeing that charging of the terminal equipment can be successfully completed; and the scheme of the invention only needs to switch a pin connection relation between the charger and the charging port of the terminalequipment, implementation is