[{"data":1,"prerenderedAt":277},["ShallowReactive",2],{"blog-article-\u002Ftw\u002Fblog\u002Fflush-dns-mac":3},{"id":4,"title":5,"author":6,"body":7,"category":258,"cover":259,"coverAlt":260,"description":261,"draft":262,"extension":263,"meta":264,"navigation":265,"path":266,"publishedAt":267,"seo":268,"stem":269,"tags":270,"topics":273,"translationKey":275,"updatedAt":267,"__hash__":276},"articles_tw\u002Ftw\u002Fblog\u002Fflush-dns-mac.md","如何清除 Mac 的 DNS 快取","Harry",{"type":8,"value":9,"toc":251},"minimark",[10,14,31,42,47,50,53,82,89,96,100,103,106,116,119,122,125,136,178,181,189,193,196,233,236,247],[11,12,13],"p",{},"Wi-Fi 已連線，其他網站也能開啟，卻有某個網站一直顯示「找不到伺服器」；或者網站已搬到新的伺服器，Mac 上的存取仍然異常。這時，可以檢查是否與本機暫存的 DNS 記錄有關。",[11,15,16,21,22,26,27,30],{},[17,18,20],"a",{"href":19},"\u002Ftw","MangoDisk"," 支援",[23,24,25],"strong",{},"重新整理 DNS 快取","。在",[23,28,29],{},"系統維護","中找到這個項目，確認並授權後即可執行，不必自行查找和輸入終端機指令。當 Mac 記住了過期的解析結果時，這項操作可能有幫助；完成後，再開啟原本無法存取的網站，確認是否恢復。",[11,32,33],{},[34,35],"img",{"alt":36,"decoding":37,"height":38,"loading":39,"src":40,"width":41},"MangoDisk 的 macOS 系統維護畫面，底部顯示「重新整理 DNS 快取」與執行按鈕","async",1590,"lazy","https:\u002F\u002Fassets.mangodisk.app\u002Fimages\u002Fscreenshots\u002Ftw\u002Flight-08-system-maintenance.jpg",2372,[43,44,46],"h2",{"id":45},"用-mangodisk-清除-mac-的-dns-快取","用 MangoDisk 清除 Mac 的 DNS 快取",[11,48,49],{},"先確認網址沒有拼錯，再開啟一個平常使用的網站，確認基本網路連線正常。如果 Wi-Fi 尚未連線，或所有 App 都無法上網，請先處理連線問題。",[11,51,52],{},"執行前，先儲存網頁上尚未送出的內容，再依下列步驟操作：",[54,55,56,63,73,76,79],"ol",{},[57,58,59,60,62],"li",{},"開啟 MangoDisk，在側邊欄選擇",[23,61,29],{},"，等待檢查完成。",[57,64,65,66,68,69,72],{},"找到",[23,67,25],{},"，點選右側的",[23,70,71],{},"執行","。",[57,74,75],{},"閱讀確認提示，確認執行這一項維護。",[57,77,78],{},"依 macOS 提示授予管理員權限，並等待工作回報。",[57,80,81],{},"執行結束後，重新開啟原本無法存取的網址，檢查結果。",[11,83,84,85,72],{},"系統維護的檢查只會讀取狀態；重新整理快取需要另外執行，清單中的其他項目不會一起執行。更多介面說明見 ",[17,86,88],{"href":87},"\u002Ftw\u002Fdocs\u002Ffeatures\u002Fsystem-maintenance","MangoDisk 系統維護指南",[11,90,91,92,95],{},"若未授權，或執行時出現錯誤，請先閱讀具體訊息。",[23,93,94],{},"維護工作完成，不代表網站一定恢復連線","，仍要重新開啟同一個網址確認結果。",[43,97,99],{"id":98},"清除-dns-快取會改變什麼","清除 DNS 快取會改變什麼？",[11,101,102],{},"DNS 協助 Mac 依網站名稱找到對應的網路位址。系統會暫時記住查詢結果，減少重複查詢；但當結果過期，就可能繼續使用舊位址。",[11,104,105],{},"清除本機 DNS 快取後，後續查詢可以重新取得結果。這不會更換你設定的 DNS 伺服器，也不會刪除瀏覽器儲存的密碼、書籤或登入 Cookie。",[11,107,108,109,115],{},"若想更換 DNS 伺服器，需要另外到網路設定操作，可參考 ",[17,110,114],{"href":111,"rel":112},"https:\u002F\u002Fsupport.apple.com\u002Fzh-tw\u002Fguide\u002Fmac-help\u002Fmh14127\u002Fmac",[113],"nofollow","Apple 的 DNS 設定說明","。公司或學校管理的網路，請依管理員提供的設定使用。",[11,117,118],{},"這項操作主要用來排查特定的解析問題。網路正常時，不必每天重新整理；它也不會提高寬頻方案的速度，或修復網站伺服器本身的故障。",[43,120,121],{"id":121},"也可以透過終端機手動清除",[11,123,124],{},"若你習慣使用終端機，在 macOS Sequoia、Tahoe 等較新的系統上，也可以手動操作：",[54,126,127,133],{},[57,128,129,130,72],{},"開啟",[23,131,132],{},"應用程式 → 工具程式 → 終端機",[57,134,135],{},"輸入以下指令並按 Return。這會重新整理本機相關快取，不會變更 DNS 伺服器設定：",[137,138,143],"pre",{"className":139,"code":140,"language":141,"meta":142,"style":142},"language-sh shiki shiki-themes github-light github-dark","sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder\n","sh","",[144,145,146],"code",{"__ignoreMap":142},[147,148,151,155,159,163,167,169,172,175],"span",{"class":149,"line":150},"line",1,[147,152,154],{"class":153},"sScJk","sudo",[147,156,158],{"class":157},"sZZnC"," dscacheutil",[147,160,162],{"class":161},"sj4cs"," -flushcache",[147,164,166],{"class":165},"sVt8B","; ",[147,168,154],{"class":153},[147,170,171],{"class":157}," killall",[147,173,174],{"class":161}," -HUP",[147,176,177],{"class":157}," mDNSResponder\n",[11,179,180],{},"依提示輸入管理員密碼，再按 Return。輸入密碼時，終端機不會顯示字元或星號。",[11,182,183,184],{},"成功執行時，終端機通常不會另外顯示成功訊息，而是回到可輸入指令的狀態。若有錯誤訊息，請先閱讀；沒有成功文字，不代表需要反覆執行。接著再開啟原來的網站即可。",[17,185,188],{"href":186,"rel":187},"https:\u002F\u002Fwww.namecheap.com\u002Fsupport\u002Fknowledgebase\u002Farticle.aspx\u002F397\u002F2194\u002Fhow-to-clear-local-dns-cache\u002F",[113],"Namecheap 的 macOS 操作說明",[43,190,192],{"id":191},"清除-dns-快取後網站仍無法開啟怎麼辦","清除 DNS 快取後，網站仍無法開啟怎麼辦？",[11,194,195],{},"繼續測試同一個網址，再依現象縮小範圍：",[197,198,199,210,216,227],"ul",{},[57,200,201,204,205,209],{},[23,202,203],{},"只有一個瀏覽器無法開啟","：換另一個瀏覽器，或使用私密瀏覽視窗測試。若結果不同，繼續檢查該瀏覽器的擴充功能、網站資料或快取。確實需要處理 App 快取時，再參考",[17,206,208],{"href":207},"\u002Ftw\u002Fblog\u002Fclear-cache-on-mac","如何清除 Mac 快取","，並留意各清理項目的影響。",[57,211,212,215],{},[23,213,214],{},"同一網路下的其他裝置也無法開啟","：檢查網站本身的狀態、路由器或網路服務供應商。不能只歸因於這台 Mac 的本機快取。",[57,217,218,221,222],{},[23,219,220],{},"剛修改過網站的 DNS 記錄","：Mac 以外的 DNS 服務也可能還保留舊結果。重新整理 Mac 無法清除上游快取，因此變更不一定立即生效。",[17,223,226],{"href":224,"rel":225},"https:\u002F\u002Fdevelopers.cloudflare.com\u002Fdns\u002Ftroubleshooting\u002Fdns-issues\u002F",[113],"Cloudflare 的 DNS 快取與更新說明",[57,228,229,232],{},[23,230,231],{},"只有公司內網或特定 VPN 連線受影響","：記下網址、連線狀態和完整錯誤訊息，交由網路管理員進一步確認，避免任意覆寫組織提供的 DNS 設定。",[11,234,235],{},"若問題持續，保留瀏覽器的完整錯誤訊息，並記錄哪些網站、瀏覽器、裝置或網路受影響。這些線索比連續重新整理快取更有助於後續排查。",[11,237,238,239,242,243,72],{},"需要透過圖形介面重新整理 Mac 的 DNS 快取時，可以",[17,240,241],{"href":19},"下載 MangoDisk","，在系統維護中單獨執行對應項目。免費開源，不必註冊。更多相關教學見 ",[17,244,246],{"href":245},"\u002Ftw\u002Fblog\u002Ftopics\u002Fmac-cleanup","Mac 使用與管理文章",[248,249,250],"style",{},"html pre.shiki code .sScJk, html code.shiki .sScJk{--shiki-default:#6F42C1;--shiki-dark:#B392F0}html pre.shiki code .sZZnC, html code.shiki .sZZnC{--shiki-default:#032F62;--shiki-dark:#9ECBFF}html pre.shiki code .sj4cs, html code.shiki .sj4cs{--shiki-default:#005CC5;--shiki-dark:#79B8FF}html pre.shiki code .sVt8B, html code.shiki .sVt8B{--shiki-default:#24292E;--shiki-dark:#E1E4E8}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":142,"searchDepth":252,"depth":252,"links":253},2,[254,255,256,257],{"id":45,"depth":252,"text":46},{"id":98,"depth":252,"text":99},{"id":121,"depth":252,"text":121},{"id":191,"depth":252,"text":192},"Mac 系統工具","\u002Fimages\u002Fblog\u002Fflush-dns-mac.webp","暖白背景上的橘色重新整理箭頭、相連的網路節點與瀏覽器視窗","透過 MangoDisk 或終端機清除 Mac 的 DNS 快取，了解適合重新整理的情況，以及網站仍無法開啟時可以檢查哪些問題。",false,"md",{},true,"\u002Ftw\u002Fblog\u002Fflush-dns-mac","2026-11-04T12:16:11+08:00",{"title":5,"description":261},"tw\u002Fblog\u002Fflush-dns-mac",[271,272,29],"Mac DNS 快取","清除 DNS 快取",[274],"mac-cleanup","article-flush-dns-mac","gzoKdHQUrikigFzYaUHJdFHJ2KHPmVuiQ1qnd5Lvjmc",1794358864631]