Nowadays, there are many brands of smart English, which are divided into three categories. One is intelligent learning on computer, among which Ebbinghaus and redwood are well-known. Others are similar, follow the trend, learn and learn, what is the top word, Rubik's cube. The most perfect product should be mahogany, and the highest cost of joining is mahogany. One is to use PAD, easy to learn, shining star, excellent classroom, intelligent cow AI English. Smart cow AI should be regarded as. Mode and product effect should be the best. Others that can do one-on-one and teamwork are not available in the market at present, and the cost is reasonable. The third kind, squirrel AI, theory and answer, six intelligent general subjects, the effect is not as good as those who specialize in intelligent English. The core of English is training, not teaching. To sum up, joining or taking students to try it out depends on the effect and function of the product. Good products are king.