(The teachers of Boxing Experimental Middle School in Binzhou City, Shandong Province teach students through the "Cloud Classroom".) (Students of Dashaixiang Primary School in Shashi, Jingzhou City, Hubei Province participate in rhythmic exercises with students of Yajiao Primary School in remote villages and towns through the "Cloud Classroom".) Under the wave of information networking, the "Cloud Classroom", which gathers diversified online curriculum resources, is actively serving people's learning needs with high-quality content, and providing new teaching ways for the education of primary and secondary schools everywhere. As more and more resources are gathered on the digital education service platform, "cloud classroom" is of great benefit to the digital transformation of education. On March 28 of this year, the national smart education platform guided by the Ministry of Education officially went online, integrating various information contents such as primary and secondary education, vocational education, higher education and employment service resources, providing intensive platform foundation support for "cloud classroom" mode teaching, and also freeing school teaching from time and space constraints. "I like watching Cloud Classroom on TV. I can watch some knowledge points that I don't understand repeatedly and learn knowledge that is not in the textbook." Mingyue, a fifth grader at Fengcheng Experimental Primary School in Yichun, Jiangxi Province, said. During the epidemic prevention period, the "cloud classroom" teaching mode not only ensures the smooth development of teaching work, but also ensures the teaching quality. Open the TV and click to enter the national intelligent education platform for primary and secondary schools; Select the video layout for the course arrangement of the day and watch the relevant "Cloud Classroom" content resources; After class, we completed the "smart homework" of the day, uploaded it to the "homework together" platform, and the teachers gave feedback on their comments after careful correction... The digital teaching form of "cloud class" enables Mingyue to learn well and abundantly at home, solve the "difficulties and anxieties" of teaching, and the learning process is convenient and efficient. At the beginning of launching the "Cloud Classroom" teaching mode, Mingyue's mother, Ms. Ding, worried that "just watching TV for learning is not as effective as the teacher's on-site lectures". However, after watching the relevant courses with her children, the high-quality digital teaching content reassured Ms. Ding. "The platform invites high-quality education teachers from all over the country. The teachers give vivid and detailed explanations in class and explain knowledge points in simple terms." Ms. Ding said that the "Cloud Classroom" model can help teachers in class teach children well, regardless of time and space limitations. Yang Zongkai, director of the Education Informatization Strategy Research Base (Central China) of the Ministry of Education and president of Wuhan University of Technology, believes that the overall digital transformation of education has become an inevitable trend, and a new teaching model under the digital conditions should be explored. With the help of the digital education public service platform, "Cloud Classroom" will further release the vitality of the network intelligent era, and drive the construction of a learning society that "everyone can learn, everywhere can learn, and always can learn". Education resources are shared on the "cloud" under the "cloud classroom" mode, and high-quality teaching resources have achieved wider dissemination and sharing relying on electronic media and "cloud platform". For primary and secondary school education, both students and teachers can benefit from it. Teaching means have completed the transformation and upgrading of the digital era, which is conducive to improving primary and secondary schools