Thin metallic plate with micro-pattern can be applied to useful products such as electrical and automobile parts, bipolar plates in fuel cells, and plate heat exchangers, etc. There are several processes to manufacture thin metallic plate such as stamping, rubber forming, vacuum die-casting, and semi-solid forming. This paper introduces forming processes for bipolar plate in fuel cells. In stamping and rubber forming, aluminum, stainless steel, and titanium could be used for bipolar plate. In vacuum die casting and semi-solid forming, only aluminum could be used but very precise and soundness bipolar plate was manufactured.