With the rapid advancement of artificial intelligence (AI) technology, various aspects of the business sector are undergoing profound transformations. Many brands are actively considering the use of AI-generated advertisements for product promotion. The impact of AI-generated ads for different product types on consumer purchase intention warrants in-depth exploration. Experimental results indicate that, compared to functional products, AI-generated ads for symbolic products more significantly enhance consumer purchase intention. Additionally, consumers perceive AI-generated ads for symbolic products as having lower perceived deception compared to those for functional products, thereby increasing the purchase intention for symbolic products. This study provides a reference for businesses in applying and promoting AI-generated advertisements.