It is theoretically possible to design a viral vector as a medium for gene editing tools, but there are huge technical, ethical and safety challenges in practical application. 1. **Technical Challenges**: Gene editing technologies, such as CRISPR-Cas9, have shown great potential. However, it remains a complex issue to effectively and accurately deliver these tools to specific cells or populations in the body. Viral vectors require very precise targeting capabilities to avoid affecting non-target cells. In addition, the accuracy of gene editing needs to be ensured to prevent off-target effects and potential harmful consequences. 2. **Ethical Challenges**: The use of gene editing tools on a large scale involves profound ethical issues, including informed consent, privacy rights, and potential social impacts. Changing the human genome may lead to unforeseen consequences and may trigger debates about eugenics and social inequality. 3. **Safety Challenges**: Any widely used gene editing technology must undergo rigorous safety testing to prevent accidental infections, adverse reactions, or other health risks. In addition, there is a need to guard against the risk of possible bioterrorism or malicious use of gene editing technology. Under the current level of science and technology and legal framework, the large-scale use of viral vectors for gene editing remains a highly controversial and challenging practice. The scientific community and regulatory agencies are cautious about the application of gene editing, ensuring that the development of technology meets safety and ethical standards, as well as the interests and wishes of the public.