There is no doubt that Google Classroom is a free application for schools and non-profit organizations. Google officially stated that it allows teachers to quickly create classes and check homework, provide timely feedback and easily communicate with students in the online classroom. For many students, due to the outbreak of the epidemic, using Google Classroom online can greatly reduce the risk of students being infected with epidemics offline when they are forced to go to school.The first advantage is that Google Classroom is very easy to use, and novices do not need to spend too much time to master the operation of this platform. However, it does have a lot of hidden functions, which require a little effort and time to study.But It said that these functions do not affect the basic use. For more functions, you can find the corresponding function step by step and then learn this function according to your needs. Compared with other complex systems or online softwares that require teachers to adapt and learn with difficulty , Google Classroom is simple. This means that it can greatly facilitate the teacher's teaching method, and will not add too much burden or pressure to the old teachers. The same is true for students. The simple operation interface of Google Scholar can give students an atmosphere of concentration on learning. Furthermore, This platform has other convinient functions.For example,When teachers want to count students' scores, they can use this platform to export students' scores into Excel document files. In addition, when the teacher wants to view all the scores of a single student and also wants to send the score report to the students, they can use the third-party extension program Gradebook to operate. Moreover, the teacher can use the chart and analysis function of Sheet to report to the students and then do a variety of analysis and demonstrations of the results.However,there are also some disadvantages of this platform.First of all, Google Classroom does not have a group discussion function, so the teacher can only explain and display the courseware in the class. If there is an open discussion in class, it means that multiple people need to speak out and then discuss at the same time, then it will be difficult to maintain order and cause chaos in the online classes. But if students are required to discuss after class, it is difficult for students to complete the practical part in online classes. Second, Google Classroom does not accept third-party software for the time being. For example, if a student or teacher needs to transfer a file that is not compatible with Google, then this file cannot be opened for viewing or transfering, so this will cause some restrictions and inconvenience for students and teachers to learn something important .To sum up, this platform integrates the several steps of teachers assigning homework, students doing homework, students handing in homework, and teacher correcting , issuing homework in traditional classrooms and so on . It also strengthens the communication between students and teachers on the classes which are taken by online. What's more, Students began to use electronic documents to complete their homework instead of using traditional pens and paper. However,