In business competition, using strategies to intentionally guide negative reviews is extremely unethical and may not only violate the law, but may also damage one's own reputation and brand image. However, understanding these improper strategies can help companies identify and defend against unfair competition by competitors. The following are some strategies that may be used to guide negative reviews: 1. **Fake reviews**: Creating fake accounts to post negative reviews on review platforms to deliberately distort the true reviews of competitors' products. 2. **Water army**: Hiring "water army" to post negative comments on social media or comment areas to increase the negative exposure of competitors. 3. **Social media manipulation**: Using negative topics and comments on social media to create public distrust of competitors. 4. **Public opinion guidance**: Spreading negative information about competitors and creating negative public opinion through public relations activities or press releases. 5. **Customer psychological warfare**: Using psychological tactics on target customers to imply that competitors' products have safety hazards or quality problems in order to influence consumers' purchasing decisions. 6. **Exploitation of competitors' negative events**: When competitors have negative events (such as product recalls, scandals, etc.), quickly spread relevant information to increase the impact. 7. **Keyword optimization**: Through search engine optimization (SEO) technology, ensure that negative information appears first when users search for a brand. It should be emphasized that these strategies are unethical and may face legal risks. In commercial competition, building a good brand image and providing high-quality products are the right direction for sustainable development.