There are many ways to optimize keywords, but the most basic is to clarify the target audience and search intent of the keywords, and formulate a reasonable keyword strategy based on these factors. Secondly, it is necessary to conduct keyword research and analysis, understand the competition situation and user search habits, and select high-quality, low-competition keywords. Finally, continuous optimization can be carried out by adjusting the bid, quality score and matching method of keywords. The optimization methods of the Alibaba platform will also vary depending on different industries, and appropriate adjustments and improvement strategies can be made according to the characteristics of different industries.