SSD-0014 · Status: contested · Version 1.0 · Reviewed 12 November 2026 · Wikidata: no item
Definition
E-E-A-T stands for experience, expertise, authoritativeness and trustworthiness: the qualities Google’s quality raters are asked to assess when judging whether content shows first-hand knowledge of its subject.
E-E-A-T 指經驗、專業、權威與可信：Google 要求品質評分員在判斷內容是否展現對主題的第一手認識時，所評估的四項質素。
In practice
It is a framework used in human evaluation, not a ranking score and not a signal you can set. Google states that E-E-A-T is not a ranking factor, while also stating that its systems aim to surface content that demonstrates it. The apparent contradiction resolves once you treat E-E-A-T as an outcome of many signals — author identity, citations, factual accuracy, independent reviews — rather than one input. The “experience” E was added in December 2022, which is why older material still says E-A-T. Its practical use is as an audit checklist: can every claim on this page be attributed to someone accountable?
它是一套用於人工評估的框架，不是排名分數，也不是可以設定的訊號。Google 表示 E-E-A-T 不是排名因素，同時也表示其系統旨在呈現展現 E-E-A-T 的內容。這個表面矛盾，只要把它理解為眾多訊號（作者身份、引用、事實準確度、獨立評價）的結果而非單一輸入，就能解開。當中的「經驗」E 於 2022 年 12 月加入，所以較舊的資料仍寫 E-A-T。實務用法是當檢查清單：這一頁的每一項主張，能否歸屬於一個可負責的人？
What it is not
- Not a ranking factor. Google says so directly, and no ranking system consumes it as a value.
- Not a score. No tool produces a real E-E-A-T number; anything presented as one is a vendor construct.
- Not a substitute for being right. Signals of expertise cannot rescue a factually wrong page.
Status
Contested. Practitioners invoke it as if it were a metric, which Google’s own documentation contradicts. The concept is stable; the way it is used is not. There is no Wikidata item, which fits its status as a rater guideline rather than an established technical term.
Identity
- Wikidata: no item (checked 12 November 2026)
- English aliases: E-E-A-T; EEAT; E-A-T (pre-2022 form)
- 中文正名：E-E-A-T（業界通用原名，不翻譯）；亦作「經驗、專業、權威、可信」
- Primary official source: Google Search Quality Rater Guidelines
Related terms
Sources
- Google, Search Quality Rater Guidelines (public PDF, current edition as of 12 November 2026).
- Wikidata entity search for “E-E-A-T”, no matching item (checked 12 November 2026).