The desensitizing device contains an electrical stimulation member optionally configured on a support member. The electrical stimulation member contains a control circuit, at least two electrodes, and an electricity supply element. The electricity supply element provides electricity to the control circuit, and the control circuit generates a stimulating current to the electrodes. By configuring a male genital with the support member so that the electrodes are in contact with the penis skin, the stimulating current produced by the control circuit is conducted to the electrodes and provides a low-strength subcutaneous nerve stimulation through the penis skin. The subcutaneous nerve is as such temporarily numbed and desensitized.