An endoscope and a treatment instrument of the present invention include: a rod-like insertion portion that can be inserted into a subject an electrodeposition portion located on at least part of a surface of the insertion portion and configured to store an electric charge or take an electric charge to electrodeposit an electrically charged substance and a connection portion including one end electrically connected to the electrodeposition portion and another end electrically connected to one of a direct current power source and a static electricity generation apparatus in order to apply a voltage to the electrodeposition portion or in order to cause the electrodeposition portion to take an electric charge.