Trial teaching, also known as classroom teaching, is a teaching form in which teachers demonstrate various teaching skills and organizational forms through oral and body language in a limited time and examine teachers' comprehensive ability. First of all, we should choose the teaching content reasonably, not too greedy and meticulous. Teachers should deeply analyze the content of teaching clips, grasp the main objectives, do a good job in the design of key content, and try to reduce unnecessary situations. Secondly, we should pay great attention to the design of leading language and interlanguage, so as to avoid too detailed leading language and lengthy interlanguage taking up the time of analysis.