百度(du)對關(guan)鍵詞(ci)的(de)(de)密度(du)沒(mei)有(you)那么敏感。在(zai)(zai)過去，積(ji)累可以產(chan)生好的(de)(de)排名。現在(zai)(zai)很(hen)(hen)(hen)多(duo)網站(zhan)通過攻擊(ji)分析排名很(hen)(hen)(hen)好，但密度(du)很(hen)(hen)(hen)低，甚至有(you)很(hen)(hen)(hen)多(duo)是0。因(yin)此，很(hen)(hen)(hen)多(duo)站(zhan)長不注意關(guan)鍵詞(ci)的(de)(de)密度(du)，認為這是無關(guan)緊要的(de)(de)，特別是對于一些與內容優化無關(guan)的(de)(de)關(guan)鍵詞(ci)，比如沙發頁面。把(ba)咖啡桌上的(de)(de)一些關(guan)鍵詞(ci)翻出來，密度(du)很(hen)(hen)(hen)低，內容相(xiang)關(guan)性很(hen)(hen)(hen)差。用這種(zhong)方法優化關(guan)鍵詞(ci)，效果好嗎？

事實上(shang)，關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞的(de)(de)(de)(de)布局和關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞與內容的(de)(de)(de)(de)相(xiang)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)性(xing)不(bu)僅體現(xian)在網站(zhan)的(de)(de)(de)(de)標題上(shang)；如果(guo)標題上(shang)有(you)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞，但頁(ye)(ye)面(mian)(mian)(mian)上(shang)沒有(you)這樣的(de)(de)(de)(de)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞，那(nei)么可以肯定(ding)的(de)(de)(de)(de)是(shi)(shi)，這個(ge)頁(ye)(ye)面(mian)(mian)(mian)與關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞的(de)(de)(de)(de)相(xiang)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)性(xing)非常差(cha)，優化(hua)起來也(ye)(ye)比(bi)(bi)較困難(nan)。通(tong)過我們自己的(de)(de)(de)(de)實踐，我們知道(dao)，關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)是(shi)(shi)單詞排名(ming)只能(neng)通(tong)過外鏈的(de)(de)(de)(de)積累產生，而(er)且穩定(ding)性(xing)比(bi)(bi)較差(cha)，所(suo)需時間也(ye)(ye)比(bi)(bi)較長。優化(hua)的(de)(de)(de)(de)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞有(you)四個(ge)：茶具(ju)(ju)(ju)、茶具(ju)(ju)(ju)、禮(li)品茶具(ju)(ju)(ju)、茶具(ju)(ju)(ju)價格，都(dou)是(shi)(shi)在頁(ye)(ye)面(mian)(mian)(mian)的(de)(de)(de)(de)標題上(shang)設置(zhi)的(de)(de)(de)(de)，但是(shi)(shi)我們沒有(you)看到完(wan)全匹配的(de)(de)(de)(de)茶具(ju)(ju)(ju)、禮(li)品茶具(ju)(ju)(ju)的(de)(de)(de)(de)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞，甚至頁(ye)(ye)面(mian)(mian)(mian)上(shang)也(ye)(ye)沒有(you)包裝或禮(li)品的(de)(de)(de)(de)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞，可見這兩(liang)個(ge)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞之間的(de)(de)(de)(de)相(xiang)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)性(xing)是(shi)(shi)比(bi)(bi)較大的(de)(de)(de)(de)可憐的(de)(de)(de)(de)。從優化(hua)中可以看出，分(fen)類信息的(de)(de)(de)(de)內容頁(ye)(ye)面(mian)(mian)(mian)都(dou)安排在首頁(ye)(ye)，可見這些關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞的(de)(de)(de)(de)競(jing)爭力(li)不(bu)強，但優化(hua)需要(yao)付(fu)出很(hen)大的(de)(de)(de)(de)努力(li)，效果(guo)也(ye)(ye)不(bu)好(hao)，茶具(ju)(ju)(ju)的(de)(de)(de)(de)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞也(ye)(ye)不(bu)去。優化(hua)后(hou)，卻產生了很(hen)好(hao)的(de)(de)(de)(de)排名(ming)，隨著(zhu)頁(ye)(ye)面(mian)(mian)(mian)權重的(de)(de)(de)(de)增(zeng)(zeng)加，排名(ming)猛增(zeng)(zeng)，而(er)且這個(ge)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞的(de)(de)(de)(de)競(jing)爭力(li)要(yao)高(gao)于(yu)那(nei)些關(guan)(guan)(guan)(guan)(guan)(guan)(guan)鍵(jian)(jian)(jian)(jian)詞。排名(ming)的(de)(de)(de)(de)主要(yao)原(yuan)因是(shi)(shi)茶具(ju)(ju)(ju)密度足夠(gou)，相(xiang)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)性(xing)很(hen)高(gao)。

密度對于關(guan)(guan)(guan)鍵詞(ci)排名的重要(yao)性：如果一個(ge)頁面有大量匹配(pei)的關(guan)(guan)(guan)鍵詞(ci)，百度會(hui)確(que)定(ding)這(zhe)個(ge)頁面與這(zhe)個(ge)關(guan)(guan)(guan)鍵詞(ci)相(xiang)關(guan)(guan)(guan)。當別人輸入關(guan)(guan)(guan)鍵詞(ci)時，他們可以(yi)在(zai)最短的時間內(nei)找到自己想(xiang)要(yao)的關(guan)(guan)(guan)鍵詞(ci)，這(zhe)無(wu)疑是不錯的內(nei)容(rong)，而且體驗(yan)也比較(jiao)好。

雖然(ran)關(guan)鍵(jian)(jian)詞密度(du)會影(ying)響關(guan)鍵(jian)(jian)詞的排名(ming)，但(dan)(dan)隨機累(lei)積不(bu)會影(ying)響排名(ming)。它必須看起來很自然(ran)。例如(ru)，頁面上的關(guan)鍵(jian)(jian)字(zi)設(she)置的非(fei)常自然(ran)，并(bing)且沒有任何(he)堆砌(qi)嫌疑。假設(she)我們(men)將(jiang)關(guan)鍵(jian)(jian)字(zi)強(qiang)制(zhi)到頁面中(zhong)，雖然(ran)它可以(yi)提高頁面上關(guan)鍵(jian)(jian)字(zi)的密度(du)，但(dan)(dan)是我們(men)發(fa)現(xian)了(le)這(zhe)種效(xiao)果。恰(qia)恰(qia)相反，因為別人進入(ru)婚紗攝影(ying)網站找不(bu)到自己(ji)想要(yao)的，或者因為關(guan)鍵(jian)(jian)詞的積累(lei)，文章質量下(xia)降，所以(yi)跳出(chu)率會大(da)大(da)提高。頁面中(zhong)可能(neng)會出(chu)現(xian)這(zhe)樣一種情況：一開始(shi)排名(ming)很好，但(dan)(dan)一兩周后，關(guan)鍵(jian)(jian)詞排名(ming)就(jiu)下(xia)降了(le)。不(bu)管怎么(me)發(fa)鏈，效(xiao)果還(huan)是很不(bu)理想，甚至出(chu)現(xian)快(kuai)照回歸，關(guan)鍵(jian)(jian)詞排名(ming)下(xia)降，網站的實力(li)也下(xia)降了(le)。