The invention relates to a soft current collector and a lithium-ion battery made of a soft current collector, which is characterized in that the manufacturing method is as follows: first, the positive electrode is prepared: the positive electrode slurry is coated on the aluminum layer with a thickness of 0.1-10.0 μm, and the thickness of the plastic is 5.0~30.0μm aluminized plastic, the coating thickness is 0.08~0.20mm, after drying in a vacuum oven at 80~120oC, the positive electrode sheet is obtained; the negative electrode is prepared and the negative electrode slurry is coated on the copper layer with a thickness of 0.2~8.0μm , On the copper-plated plastic with a plastic thickness of 5.0~30.0μm, the coating thickness is 0.06~0.15mm, and the negative electrode sheet is obtained after drying in a vacuum oven at 80~120oC; the positive electrode sheet, PP or PE separator, and the negative electrode are sequentially The pole pieces are stacked and packed with aluminum-plastic film, and an appropriate amount of electrolyte solution 1MLiPF6+EC:DMC (1:1) is injected into the glove box; the aluminum-plastic film is hot-pressed and packaged to obtain a flexible lithium-ion battery. It effectively improves the mass energy density of the battery cell. The cost of the battery monomer is reduced; it has the advantages of low price, because the shape of the lithium-ion battery prepared by it can be arbitrary, ultra-thin, and the mass energy density is high.