Stem cell therapy is the use of Stem cells to treat or prevent disease or condition. Stem cell therapy is emerging as potent new way to treat disease and injury with wide range medical benefits. Research is underway to develop various sources for stem cells and to apply stem cell treatment for neurodegenerative diseases and conditions diabetes, heart diseases and other conditions. However stem cells therapy produce many ethical and scientific questions that are to be solved. Nevertheless, stem cells therapy, a preamble to research of cell based therapeutics, will one day restore the functionality of the formerly un abled people, is yet to be unvealed.