Kudo Shinichi (manga) and Sherlock Holmes (novel) were both famous detective characters who had superb reasoning abilities. However, there were different descriptions and evaluations of the two detectives 'abilities in different works. In Detective Conan, Kudo Shinichi was a high school detective who was good at using magic and had knowledge and skills related to the black organization. His reasoning ability was very strong. He was also able to use Conan Doyle's Magic Mountain Villa series and the White-Clad Case to show a unique style that was different from other detectives. At the same time, he also had some shortcomings, such as his dependence on the Dark Organization and his lack of self-protection awareness. In The Complete Sherlock Holmes, Sherlock Holmes was a British detective known as the God of Reasoning. He had excellent mathematical and logical reasoning skills, able to infer the truth from the smallest details. He was also very smart and good at thinking independently and exploring the essence of the problem. At the same time, he also had some shortcomings such as being too conceited and unwilling to admit his mistakes. Therefore, although Kudo Shinichi and Sherlock Holmes were both excellent detectives, their abilities were different from different perspectives. In Detective Conan, Kudo Shinichi's reasoning ability was highly praised, and in The Complete Sherlock Holmes, Sherlock Holmes 'reasoning ability was unmatched.