Nanorobots are small devices that target cancer cells while sparing healthy cells in order to treat the disease. By delivering medication straight to tumors, they improve treatment outcomes and lessen the negative effects of conventional therapies like chemotherapy. Because these robots are designed to exclusively deliver medications at cancerous locations, they can provide precise treatment without endangering healthy tissues. Nanorobots may be able to treat illnesses like Alzheimer's in addition to cancer. Nanorobots are becoming a reality thanks to recent technical developments. Future cancer treatments could include injecting nanorobots to remove tumors without the unpleasant side effects of radiation or chemotherapy, which would allow patients to recover more quickly and feel more comfortable.