First of all, we should choose the direction of writing, such as whether to comment on the creative background, writing style, characters, structure, hidden information, culture or influential position. Generally choose a key point to write. For example, if you choose character analysis, do you want to comment vertically or horizontally? Vertical analysis usually uses some psychological analysis, while horizontal comparison can be analyzed through the main roles of other literary works. In short, it is most important to find the right direction and focus. Generally speaking, it is not enough to write every point, like writing book reviews and film reviews at ordinary times. Graduation thesis generally needs deep excavation.