The embodiment of the invention discloses a charging protection method. The method comprises: a charging protection device receives a first protection instruction sent by a terminal, the first protection instruction is an instruction emitted by the terminal when the terminal detects the abnormal charging state, the charging protection circuit is started according to the protection instruction, the charging protection circuit controls the charging voltage to be smaller than a first presetting threshold value and/or controls the charging current to be smaller than a second presetting threshold value. Therefore, the charging protection device is in communication connection with the terminal, the terminal detects the charging state at charging, and if the terminal detects the abnormality, the protection instruction is sent to the charging protection device to allow the charging protection device to control the charging voltage and the charging current through the protection circuit so as to realize the charging protection of the terminal.