There is often a misunderstanding in middle school students' writing: if the theme is not profound, they will choose some big events to talk in general terms, thus making the article false and unable to impress people. How to guide students to grasp the main idea of the article? Seeing the big from the small is one of the skills of conception. Small is a phenomenon, big is the essence. The so-called "small" refers to the small selection of materials and the small writing angle, and the so-called "big" refers to the great ideological connotation. "Seeing the big from the small" is to choose the small things in life to express the major theme. So, how should we use this technique in writing? I think we should pay attention to one or two points; 1. We should pay attention to meaningful little things. There are many small things in life, so we should focus on those small things with high quality and far-reaching significance. If there is such an ingredient; The author interprets the connotation of sharing by writing a story about a student who mistakenly understands sharing as getting something for nothing and plagiarizes other people's homework when he encounters a problem that he can't do, which leads to a decline in his grades. The little author writes small things with ingenious ideas and understands Dali, thus deepening the theme of the article. Therefore, when writing, we should keep pace with the times, and constantly explore meaningful "small" things in life with the gradual enrichment of our life experience. Only in this way can our composition have a higher artistic conception. 2. Divergent thinking and enhance ideological connotation. Looking sideways, the mountain side becomes a peak. If you look at the same thing in life from different angles, you will have different understandings. We should form the habit of divergent thinking so as to have new ideas. For example, writing on the topic of "door", at first, many students can't write. The author guides students to deeply understand the connotation of "door", and as a result, their thoughts are opened, and some people should open their hearts to overcome failure; Some people should understand each other; Take the door as the starting point, write about the affection between mother and child … In addition, write with appropriate association and imagination. This enables us to write from things and people, from people and society, thus effectively improving the ideological content of the composition. For example, taking "Feeling" as the essay topic, a student thought of the value of unity from a glass of water in his hand, and thought that we should cherish water resources and that tolerance is great. Finally, the theme of paying attention to life and realizing that life will benefit is expressed. Our daily life is inseparable from trivial things. Once we write a composition, we should try our best to write trivial things and experience Dali. As long as we are good at observing life, savoring life, and expressing our unique feelings in an appropriate way, then the life in the pen will be rich and meaningful.