Stem cell biotechnology is a field of biotechnology which develops tools and therapeutics through modification and engineering of stem cells. Stem cell biotechnology may be a revolutionary sub field of biotechnology to develop and improve tools and generate a lot of on through modify and regenerative drugs. Vegetative cell technology is very important role in tissue regeneration drugs the premise for cell transplantation is that blood cells (red cells, white cells and platelets) and immune cells (lymphocytes) arise from the stem cells, that square measure gift in marrow, peripheral blood and cord blood. Intense medical aid or medical aid kills the patient's stem cells. The potential of stem cell technology is to develop therapy for many untreatable diseases through cellular replacement or tissue engineering.