2022年搜索引擎工作原理及SEO入门指南
搜索引擎三大核心工作流程
Core Workflow of Search Engines
现代搜索引擎主要通过三个关键步骤为用户提供信息：
Modern search engines deliver information through three key steps:
1. 爬取网站(Crawing) - 搜索引擎蜘蛛抓取网络内容
1. Web Crawling - Search engine spiders crawl web content
2. 创建索引(Indexing) - 对抓取内容进行分类存储
2. Indexing - Categorizing and storing crawled content
3. 建立排名(Ranking) - 根据相关性对结果排序
3. Ranking - Sorting results by relevance
搜索引擎爬取机制详解
Deep Dive into Search Engine Crawling
搜索引擎通过爬虫(蜘蛛)程序自动抓取网络内容。这些爬虫从种子URL出发，沿着链接不断发现新内容，包括网页、PDF、音频等多种格式。
Search engines use crawlers(spiders) to automatically collect web content. Starting from seed URLs, these crawlers follow links to discover new content including web pages, PDFs, audio files and more.
如何检查网站收录情况？
How to Check Website Indexing Status?
使用site:域名命令可查询网站在搜索引擎中的收录情况。例如在Google搜索：site:www.yourdomain.com
Use the site:domain command to check indexing status. For example search on Google: site:www.yourdomain.com
更精确的数据可通过Google Search Console获取，这是比百度站长平台更强大的工具。
More accurate data can be obtained through Google Search Console, a more powerful tool than Baidu Webmaster Tools.
网站未被收录的常见原因
Common Reasons for Non-Indexed Websites
• 新网站尚未被爬取
• 缺乏外部链接
• 网站结构过于复杂
• 存在阻止爬取的代码(如noindex)
• 网站受到搜索引擎惩罚
• New website not yet crawled
• Lack of external links
• Overly complex site structure
• Crawl-blocking codes (like noindex)
• Search engine penalties
SEO优化关键提示
Key SEO Optimization Tips
使用robots.txt文件控制爬虫行为，避免重复页面、搜索参数等低价值内容被索引，集中权重到核心页面。
Use robots.txt to control crawler behavior, preventing indexing of low-value content like duplicate pages and search parameters, focusing weight on core pages.
