In cell therapy, drugs or genes are delivered to cell cytoplasm or nuclei but the drugs or genes cannot penetrate cell membranes by simple diffusion. Although there are various delivery methods, they nonetheless are far from perfect. As an alternative method, the micronanoneedle patch disclosed is designed for easy delivery of drugs/genes to large numbers of cells without affecting cell viability and physiology, and that no toxins will be introduced. Benefits: Quick and easy delivery, Minimized cell deaths, No toxins are introduced, Universal technology