At present, it has become a habit for college students, middle school students and English learning enthusiasts to look up and memorize words on the mobile app. The electronic dictionary on the app has almost replaced most of the paper dictionaries. However, a reporter's survey recently found that many English learning apps with more than 100 million users frequently have spelling, phonetic symbols, translation and other content errors. How long have you not looked through a paper dictionary? Perhaps from the moment when mobile dictionary apps began to popularize, we put down the heavy "brick". Now you don't even need to input word by word, take a picture and record a paragraph. The machine can directly help you query, translate and even list all kinds of sentence patterns and grammatical usages. This can be said to get twice the result with half the effort in learning. It is reasonable that dictionary apps are favored by students. However, in the final analysis, dictionary app is just a kind of transplantation - presenting the existing content on the market through program code collection and sorting. In essence, it does not have a complete audit process for content. In terms of cost investment, the R & D enterprises of such apps do not have an audit department, and self correction comes more from the daily maintenance after product development and user feedback. In terms of professionalism, it is not surprising that there are mistakes. In fact, it is not just dictionary apps. For all text products involving electronic paper content, such as e-books and e-magazines, there will be some small problems in content revision. On the one hand, it has the impact of poor form conversion. On the other hand, the lack of corresponding supervision is an important reason for their continuous small mistakes. At present, in addition to some copyright issues and the constraints of the publishing society, the text errors of such electronic books are "unattended" most of the time. Relevant functional departments either have no qualification for investigation or management authority, and finally have to let go. Although small mistakes are harmless and can be corrected in time, dictionary apps are happy to ignore them due to the lack of supervision and internal driving force. This will mislead those students who are used to using dictionary app. If mistakes continue, users will naturally vote with their feet. As a learning tool, dictionary apps and learning apps should recognize their own positioning and responsibilities. Instead of developing some fancy and irrelevant new functions, it's better to do a good job in content correction and reduce errors. This is the foundation of their foundation. In addition, in terms of supervision, electronic dictionaries should also enjoy the treatment of paper dictionaries, which needs to study and formulate corresponding management rules to promote the cooperation of multiple departments. Don't let "destroy" people's tireless app flow into the market and harm people's children. (outlook new era)