It is theoretically possible to create an organism through genetic engineering whose metabolites can be used for military purposes. Genetic engineering technologies (such as CRISPR-Cas9) can precisely modify the genome of an organism, thereby changing its metabolic pathways to produce specific compounds. These metabolites may have potential military uses, such as as drugs, vaccines, biological weapons or other strategic materials. However, this field involves major issues such as ethics, law and security. Many countries and international organizations have strict prohibitions and regulations on the military application of biotechnology. Among them, the Biological Weapons Convention (BWC) prohibits the use of microorganisms or other biological substances as weapons, emphasizing the harmfulness of biological weapons and their potential threat to humans. Therefore, although it is technically possible to apply genetic engineering to military purposes to some extent, this is not only a scientific and technological issue, but also a complex ethical and legal issue involving considerations of international security and human well-being.