Baidu Organic Search Algorithms

Baidu makes updates to its main search algorithm on a regular basis.

Like Google, they also make significant updates from time to time, Baidu makes a significant change to a part of the algorithm and this update is given a codename.

The below table lists known Baidu algorithm updates from the most recent, to the oldest. Where possible, the overview links to further explanations regarding the change.

Date	Update Reference	Overview
September 2021	Breeze 4.0	Further targeting of websites using misleading or clickbaity titles. Title tags are important to Baidu search.
August 2021	Beacon 4.0	Targeting websites that work to the detriment of user experience and safety, such as disabling the back button, changing back button behavior, or utilizing PII without permission. Ziyuan post.
July 2021	Blue Sky 2.0	Targeting low-quality content on the search results page. Ziyuan post.
January 2021	Thunder 3.0	Further targeting of websites attempting to manipulate search rankings through artificial traffic generators, click bots and falsifying other engagement signals.
June 2020	Ice Bucket 5.0	Targeting of misleading App opens – e.g. when a user clicks on a search result and rather than loading the webpage it opens an App, or misleading images, buttons, or links that don’t highlight they’re going to open an App, but they do on interaction.
April 2020	Illegal Content Enforcement	Chinese law prohibits gambling or bet/wager style gaming, and this update further targeted and demoted such content.
February 2020	Forceful Wind	Targeting link aggregation pages, where the main content is a series of links to other pages and the MC offers little to no value – examples can be dynamically generated search pages, thin category pages, or weird HTML sitemaps.
August 2019	Hurricane 3.0	Enhancement and targeting of websites in groups publishing syndicating and cross-posting content.
May 2019	Trade Wind	Targeting websites inserting links behind pagination text to direct or mislead users to other parts of the website (or other sites), instead of the next page in the series.
April 2019	Content Viewing	Targeting websites that require users to perform an action or input information before being able to view the page content.
March 2019	Beacon 3.0	Improvements to the Beacon 2.0 update.
November 2018	Ice Bucket 2.0	Improvements to the original Ice Bucket 1.0 update.
October 2018	Breeze 3.0	Improvements to the Breeze 2.0 update. Now thought to include titles for misleading downloads and programs.
September 2018	Hurricane 2.0	Further targeting of websites with plagiarized and duplicate content.
June 2018	Drizzle	An update targeting low-quality, fake, or misleading B2B websites. B2B websites are regulated by Baidu.
May 2018	Beacon 2.0	Improvements to the original Beacon 1.0 update, also through to now target websites attempting to steal user data.
May 2018	Thunder 2.0	Targteing websites utilizing black hat SEO tactics and click manipulation.
May 2018	Aurora	Focused on pages with time stamps, and SERPs began to give weighting to webpages with timestamps for searches with time sensitivity.
April 2018	Breeze 2.0	Improvements to the original Breeze 1.0 update.
November 2017	Thunder 1.0	Targeting websites attempting to manipulate search rankings through click bots and artificial engagement signals.
September 2017	Breeze 1.0	Targeting page title violations (as outlined by Baidu in their search documentation)
July 2017	Hurricane 1.0	Targeting poor quality content; plagiarized content, posting of unrelated content, and creating content to generate search traffic instead of creating content with high user value.
May 2017	Pomegranate	Targeting websites with intrusive advertising, and advertisments disguised as page content.
February 2017	Beacon 1.0	Targeting websites that attempt to hijack user devices and browsers.
November 2016	Blue Sky 1.0	Targeting websites, such as high-traffic publishers, publishing advertorials and catalogs to game the traffic received.
August 2014	Ice Bucket 1.0	Targeting low-quality websites with poor mobile experience; e.g., font size, spacing, responsiveness (lack of).
February 2013	Money Plant	Targeting websites engaging in buying and selling links with the purpose of manipulating search rankings.
June 2012	Unnamed Update	An unnamed update acknowledged by a member of Baidu’s engineering team. It is thought that two updates in June 2012 rolled out a week apart targeting “low-quality” websites. This was confirmed on a ZhangZhang post.

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