网站 301 重定向的作用及正确使用场景

一路长虹

301 永久重定向是 SEO 必备合规操作，页面迁移、域名更换、死链整改都离不开它。

301 跳转可以完整传递页面权重，不会流失原有收录和排名；统一网站入口，把不带 www 跳转到带 www，避免重复页面分散权重；删除旧页面后做 301 跳转到新内容页，留住流量和权重。

优化只使用 301 正规跳转，禁止 302 临时跳转、JS 隐藏跳转、弹窗恶意跳转，避免被算法判定作弊降权。

跳转不要多层循环，一次直达目标页面，规整全站链接结构，集中权重提升核心页面排名。
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