For beginners, the first stage of English learning has a decisive influence on the accent in the future. How to guide children to learn a strange language in a supervised English environment requires not only the best support conditions, but also the children's happiness index. The best supporting conditions include age-appropriate teaching methods, correct language learning methods, diverse opportunities for interaction and positive feedback and encouragement. Happiness index includes learning motivation from passive to active, freedom of learning methods and learning scope, satisfaction and self-confidence in learning process, etc. Children's English for Science and Technology is an English course specially designed for children aged 3-6. Supporting teaching materials include textbooks, graphic cards, CDs, hand puppets, etc., which are different from traditional boring English teaching materials. Let the children's learning effect be uninterrupted, and the English knowledge they have learned can be continuously consolidated and strengthened. In addition, the specially designed teaching materials are also in line with the personality and age characteristics of English learners at different stages, integrating knowledge, interest and life.