Literature Review Charlesto (2008) said that a dictionary is shared by at least four people when it is put in one family’s bookshelf. A dictionary in the home serves as a resource for the whole family. It improves everyone's vocabulary and it encourages children to learn more words. There are many different kind of dictionaries in the world. Some dictionaries are actually picture dictionaries and have a picture with every entry. Some pictures can help the child locate the entry he needs. They also encourage further exploration of the dictionary as children want to look at the pictures and then read about them. Others are set up with categories such as color words, animals, fruit, etc. It is wise for parents of children with special needs to understand their child’s reading level to guide at-home reading efforts. A dictionary can keep children to use as their own personal reference books. A dictionary is also an essential tool for a quality education. Modern language dictionaries has also been transformed from simple reference tools into dynamic passports to the culture of the target language, backed up by a unique language learning series. Paperback dictionaries look cool to kids in the upper elementary grades.. A good way to determine the child’s level is to ask his teacher because the child’s comfortable reading level may or may not be the same as his grade in school. It is important to get a dictionary at the correct level so that it is functional. Many parents find it helpful to get the same dictionary that is used in the child’s classroom.(Lynn Moore, 2007) Children English Dictionary is to improve the reading ability and comprehension of all children. English dictionaries provide students help in many subjects. There are always a wide range of favorite topics chosen by the students. A student cannot do his or her best work without a dictionary. By providing this tool we assist teachers in making all students active readers, good writers and creative thinkers. “I can't imagine what would happen to a group of students who do not have their own dictionaries throughout the course of their education, because a dictionary is certainly a book that can open up such a world of learning. One of the best things to watch is a student writing his or her name in the dictionary and seeing how proud they are to own one.” (Hines, 2008) A dictionary is an indispensable tool for children to learn language. They can not only learn native language, but also learn foreign language. However, it sould not be a passive role that students consult dictionaries only when they can not understand the words . Idealistically, a dictionary can play a more positive role which has colorful cover and abundant content to attract readers, and then readers would study it deeply. A dictionary would become a good tool that readers can explore language and gain their knowledge from reading it. Nowadays, there are a lot of electronic dictionaries which have small volume, large capacity, and many functions. Technology-developing updates quickly, and electronic dictionaries are also pursuing the continuous improvement to achieve perfection. But electronic dictionaries still have some insufficiencies, such as the sizes of screens, and fragmentary information. Although it seems to have abundant content and completed functions, in fact, it is just a advertising technique. The emphasis of vocabulary sould be improved. And the most important is that electronic dictionaries are not designed for children to learn English. However, which English dictionary is the best choice to parents to buy for their children? Actually, there is no standard answer to this question. But an ideal English dictionary should be at children’s standpoint to see the world. It is that teaching them to convey their thought in limited English vocabularies they have already known; use these vocabularies to describe their surroundings. Besides, the appearance of a dictionary has to be attractive, and the content of it should be colorful and vivid. All of these are to arouse children’s motivation and interest of learning. Furthermore, a children English dictionary should be different from the general English dictionary in their nature rather than a simplified English dictionary or a tool for meeting examinations.