The invention relates to a lithium ion battery, which comprises at least one group of positive electrode layer and a negative electrode layer, wherein the positive electrode layer and the negative electrode layer are connected through a diaphragm, the positive electrode layer or the negative electrode layer comprises a current collecting body, an electrode material and a porous ion conducting polymer glue layer, the current collecting body is in a multi-seeping-hole electric conductive three-dimensional reticular structure, the electrode material is filled in the seeping holes of the current collecting body, the porous ion conducting polymer glue layer is coated on the current collecting body containing the electrode material. In the lithium ion battery, the positive electrode layer or the negative electrode layer comprises the current collecting body and the electrode material, in addition, the current collecting body realizes the three-dimensional reticular combination with the electrode material through a multi-seeping-hole framework of the current collecting body, so the utilization rate of the electrode material can be improved, and in addition, the lithium ion battery with higher specific energy density and capacity can be obtained.