A button-type lithium ion battery, comprising: a metal housing ; a cell , received in the metal housing ; a terminal , disposed on an outside of the metal housing ; at least one first electrode tab , arranged on the cell and electrically connected to the metal housing ; at least one second electrode tab , arranged on the cell and electrically connected to the terminal ; and an insulating member disposed between the metal housing and the terminal ; wherein the insulating member is insulating and sealing the metal housing and the terminal ; a polarity of the at least one first electrode tab is opposite to that of the at least one second electrode tab ; a polarity of the metal housing is opposite to that of the terminal ; the metal housing and the terminal are sealing connected to the insulating member by means of heat or adhesion; characterized in that a first insulating layer is arranged between the second electrode tab and the metal housing ; the metal housing comprises a metal shell , and a cover plate disposed at a side of the metal shell and sealing connected to the metal shell ; the cell is received in the metal shell ; the at least one first electrode tab is electrically connected to the metal shell or the cover plate ; the terminal is disposed on an outer side of the metal shell or the cover plate , and insulating and sealing the metal shell or the cover plate via the insulating member ; a safety vent is arranged on an inner or outer end surface of the metal shell , the cover plate or the terminal to vent an internal overpressure; an injection hole is defined on a surface of the metal shell or the cover plate ; a cover sheet is arranged on an outside of the metal shell or the cover plate for sealing the injection hole . a metal housing ; a cell , received in the metal housing ; a terminal , disposed on an outside of the metal housing ; at least one first electrode tab , arranged on the cell and electrically connected to the metal housing ; at least one second electrode tab , arranged on the cell and electrically connected to the terminal ; and an insulating member disposed between the metal housing and the terminal ; wherein the insulating member is insulating and sealing the metal housing and the terminal ; a polarity of the at least one first electrode tab is opposite to that of the at least one second electrode tab ; a polarity of the metal housing is opposite to that of the terminal ; the metal housing and the terminal are sealing connected to the insulating member by means of heat or adhesion; characterized in that a first insulating layer is arranged between the second electrode tab and the metal housing ; the metal housing comprises a metal shell , and a cover plate disposed at a side of the metal shell and sealing connected to the metal shell ; the cell is received in the metal shell ; the at least one first electrode tab is electrically connected to the metal shell or the cover plate ; the terminal is disposed on an outer side of the metal shell or the cover plate , and insulating and sealing the metal shell or the cover plate via the insulating member ; a safety vent is arranged on an inner or outer end surface of the metal shell , the cover plate or the terminal to vent an internal overpressure; an injection hole is defined on a surface of the metal shell or the cover plate ; a cover sheet is arranged on an outside of the metal shell or the cover plate for sealing the injection hole . <EOS>