Baidu keyword optimization is a long-term work, which needs to be continuously screened according to the actual delivery effect of keywords, thus helping us to save advertising costs and improve advertising effects. Keyword optimization mainly includes the following aspects:

1. keyword adjustment: when optimizing keywords, how should the keywords be deployed on the page and how many times should the keywords appear? It can be quantified by the concept of keyword density. The industry's recognition value of keyword density is 3%~8%, which is too low, poorly ranked, too high, deceptive and easily blocked by search engines.

2. Keyword selection principle: determine the target keywords related to the website content or products, and ensure that the target keywords have search volume. The target keywords are not imaginary or randomly determined, but need to be combined in many ways according to the positioning characteristics of the website and the search habits of users in order to determine the final target keywords.

3. Keyword bidding strategy: Make bidding strategy according to competitors' situation, budget, launch time and other factors.