Recently COVID-19 situation, Internet usage is increasing rapidly, and non-face-to-face drug transactions by the general public through social network services (SNS) and the Internet are increasing. Drug advertisements that existed on the Deep Web or Dark Web are gradually spreading through the Internet and SNS for easy access to the general public. Drug transactions are made using Twitter, Telegram, and Instagram to avoid tracking by investigative agencies. The transaction method is also changing to untact transactions by receiving deposits in virtual currency such as Bitcoin and leaving drugs in certain places. Drug-related investigative agencies recognize the need to manage the rapidly increasing number of drug transactions and are investigating them. However, Compared to the size of the increase and the changing method, the investigation is difficult due to the lack of manpower. For this reason, there is a need for a web crawling system capable of automatically collecting, checking, and taking action on drug advertisement information.