Cancer is a major health issue worldwide, and the need for advanced diagnostic and therapeutic techniques is critical to improve patient outcomes. Nanorobots offer a promising technology for cancer diagnosis and therapy, as they can be programmed to target cancer cells specifically and deliver drugs or other agents directly to the tumor site. This paper provides an overview of the current status and future prospects of nanorobots in cancer diagnosis and therapy. We first discuss the various types of nanorobots that have been developed, including DNA, protein-based, and hybrid nanorobots. We describe how these nanorobots can be designed to recognize and target cancer cells based on their molecular signatures. We then review the current applications of nanorobots in cancer diagnosis, including their use in detecting cancer biomarkers and imaging cancer cells. We also highlight how nanorobots can be utilized to enhance the accuracy of cancer diagnosis by providing real-time feedback during diagnostic procedures. Finally, we discuss the current applications of nanorobots in cancer therapy, such as drug delivery and photothermal therapy. We explain how nanorobots can be engineered to release drugs or other agents specifically at the tumor site, minimizing side effects and toxicity. We also demonstrate how nanorobots can be used to deliver photothermal agents to cancer cells, allowing for the selective destruction of tumor tissue. In summary, nanorobots have the potential to revolutionize cancer diagnosis and therapy. Although challenges remain, such as improving the safety and efficiency of these technologies, the prospects of nanorobots in the fight against cancer are considerable.