The invention provides a circuit and a method for preventing a relay from bouncing and accelerating actuation. The circuit and the method can remove a relay contact oxidation film in a relay protection analog quantity interface, automatically polish a contact of the relay and improve the reliability of the relay. The method is characterized in that when the relay works, current pulse exceeding the normal state is input into the relay to remove the relay contact oxidation film to automatically polish the contact. The circuit comprises a pulse current source connected in parallel to a normal input current source of the relay, as well as a pulse generator and a control unit which are sequentially connected to an input signal of the relay, wherein the output terminal of the control unit is connected with the control terminal of the pulse current source; the pulse current source is used for being connected with an external battery to generate current pulse in a current limiting manner; the output terminal is connected with the output terminal of the normal input current source; the pulse generator is used for generating a pulse signal according to the input signal of the relay; the control unit performs enable control on the pulse current source according to the input pulse signal.