The utility model relates to the field of lithium ion cells, a novel button type lithium ion battery is disclosed, it includes: a electrode shell, the 2nd electrode shell, a electrode shell include, lie in first electrode end cover and the first annular wall body made by the metal, and outside first annular wall body, complete cladding has insulation rubber layer, as an organic wholeization of insulation rubber layer structure, the 2nd electrode shell includes that by second electrode end cover and the two ring shaped wall body that the metal was made, the foreign minister is nested in first annular wall body, the two ring shaped wall body, and the first electrode end cover is relative with the second electrode end cover, and the insulation rubber layer interval is provided with battery cell body in the casing that a electrode shell, the 2nd electrode shell constitute between the contacting area between a electrode shell, the 2nd electrode shell.