所謂趨勢(shi)(shi)(shi)(shi)線(xian)就(jiu)(jiu)是上漲(zhang)行(xing)情中(zhong)(zhong)兩(liang)個以(yi)上的低點的連(lian)線(xian)以(yi)及下(xia)跌(die)行(xing)情中(zhong)(zhong)兩(liang)個以(yi)上高點的連(lian)線(xian)，前者(zhe)被(bei)(bei)稱上升(sheng)(sheng)趨勢(shi)(shi)(shi)(shi)線(xian)，后者(zhe)被(bei)(bei)稱為下(xia)降趨勢(shi)(shi)(shi)(shi)線(xian)。上升(sheng)(sheng)趨勢(shi)(shi)(shi)(shi)線(xian)的功能(neng)在(zai)于能(neng)夠顯(xian)(xian)示(shi)出價(jia)格上升(sheng)(sheng)的支撐位，一旦價(jia)格在(zai)波動(dong)(dong)過(guo)程中(zhong)(zhong)跌(die)破(po)(po)此線(xian)，就(jiu)(jiu)意(yi)味(wei)(wei)著行(xing)情可能(neng)出現反(fan)轉，由漲(zhang)轉跌(die)；下(xia)降趨勢(shi)(shi)(shi)(shi)線(xian)的功能(neng)在(zai)于能(neng)夠顯(xian)(xian)示(shi)出價(jia)格下(xia)跌(die)過(guo)程中(zhong)(zhong)回(hui)升(sheng)(sheng)的阻力，一旦價(jia)格在(zai)波動(dong)(dong)中(zhong)(zhong)向(xiang)上突(tu)破(po)(po)此線(xian)，就(jiu)(jiu)意(yi)味(wei)(wei)著價(jia)格可能(neng)會止跌(die)回(hui)漲(zhang)。
二、投資者(zhe)在畫(hua)趨勢線時(shi)應注意以(yi)下(xia)幾點：
1.趨(qu)勢(shi)線根據價格(ge)波動時間的長短分為長期(qi)趨(qu)勢(shi)線、中(zhong)期(qi)趨(qu)勢(shi)線和短期(qi)趨(qu)勢(shi)線，時間周期(qi)越長，趨(qu)勢(shi)線的有效性就越高。
2.趨勢線連(lian)接的(de)高點(dian)或低點(dian)的(de)數(shu)量越(yue)多，有效(xiao)性就越(yue)強
3.對(dui)趨勢線的短暫突破
4.趨勢線不應過于陡峭，否則很容(rong)易被(bei)橫(heng)向整理突破(po)，失去分析意義
三、趨勢(shi)線使用技巧和方法:
1.從(cong)切(qie)線(xian)(xian)理論角度看，趨勢(shi)(shi)線(xian)(xian)是(shi)(shi)(shi)其中的(de)一部(bu)分(fen)，它是(shi)(shi)(shi)將波動運(yun)(yun)行(xing)的(de)價(jia)格的(de)低點(dian)(dian)(dian)(dian)和(he)低點(dian)(dian)(dian)(dian)連接或(huo)高點(dian)(dian)(dian)(dian)和(he)高點(dian)(dian)(dian)(dian)連接而形(xing)成的(de)直線(xian)(xian)。如果(guo)價(jia)格是(shi)(shi)(shi)按一個(ge)(ge)低點(dian)(dian)(dian)(dian)比一個(ge)(ge)低點(dian)(dian)(dian)(dian)高的(de)運(yun)(yun)行(xing)方式(shi)來(lai)(lai)運(yun)(yun)行(xing)，所畫出來(lai)(lai)的(de)趨勢(shi)(shi)線(xian)(xian)就是(shi)(shi)(shi)上升(sheng)趨勢(shi)(shi)線(xian)(xian)；如果(guo)價(jia)格是(shi)(shi)(shi)按一個(ge)(ge)高點(dian)(dian)(dian)(dian)比一個(ge)(ge)高點(dian)(dian)(dian)(dian)低的(de)運(yun)(yun)行(xing)方式(shi)來(lai)(lai)運(yun)(yun)行(xing)，所畫出來(lai)(lai)的(de)趨勢(shi)(shi)線(xian)(xian)就是(shi)(shi)(shi)下(xia)降趨勢(shi)(shi)線(xian)(xian)。還有一種(zhong)是(shi)(shi)(shi)價(jia)格的(de)低點(dian)(dian)(dian)(dian)和(he)高點(dian)(dian)(dian)(dian)橫向延伸，沒有明(ming)顯的(de)上升(sheng)和(he)下(xia)降趨勢(shi)(shi)，這就是(shi)(shi)(shi)橫盤整理或(huo)稱為箱形(xing)整理。
2.趨(qu)(qu)勢(shi)(shi)線可(ke)以分成(cheng)支撐線和壓力線，將(jiang)價格波段運行(xing)的(de)(de)低(di)點和低(di)點連(lian)接成(cheng)一條直(zhi)線，就是支撐線；將(jiang)價格波段運行(xing)的(de)(de)高點和高點連(lian)接成(cheng)一條直(zhi)線，就是壓力線。趨(qu)(qu)勢(shi)(shi)線的(de)(de)長短與其(qi)重(zhong)要性成(cheng)正比，長期趨(qu)(qu)勢(shi)(shi)線和中期趨(qu)(qu)勢(shi)(shi)線第(di)一點和第(di)二點的(de)(de)距(ju)離不應太近(jin)，如距(ju)離過近(jin)，所(suo)形成(cheng)的(de)(de)趨(qu)(qu)勢(shi)(shi)線的(de)(de)重(zhong)要性將(jiang)降低(di)。
3.趨勢(shi)線的(de)角度至關重要，過于平緩的(de)角度顯示(shi)出力度不夠，不容(rong)易(yi)馬(ma)上產(chan)生大行情；過于陡峭的(de)趨勢(shi)線則(ze)不能持久，往往容(rong)易(yi)很(hen)快轉變(bian)趨勢(shi)。
4.著(zhu)名(ming)角(jiao)度線(xian)大(da)師江恩(en)認(ren)為：４５度角(jiao)的趨勢線(xian)非(fei)常可靠，也(ye)就(jiu)是江恩(en)所(suo)說(shuo)的１×１角(jiao)度線(xian)。
5.確(que)立(li)趨勢線對于操作具有非常重(zhong)要的(de)(de)意義(yi)。"順勢而為"就是其(qi)中(zhong)的(de)(de)精華(hua)。
6.支(zhi)撐(cheng)(cheng)線(xian)(xian)和(he)壓力線(xian)(xian)是可(ke)以相互轉(zhuan)化的(de)，當價(jia)格從上向下突破(po)一條(tiao)支(zhi)撐(cheng)(cheng)線(xian)(xian)后(hou)，原有的(de)支(zhi)撐(cheng)(cheng)線(xian)(xian)將(jiang)可(ke)能(neng)轉(zhuan)變為(wei)壓力線(xian)(xian)；而當價(jia)格從下向上突破(po)一條(tiao)壓力線(xian)(xian)后(hou)，原有的(de)壓力線(xian)(xian)也將(jiang)可(ke)能(neng)轉(zhuan)變為(wei)支(zhi)撐(cheng)(cheng)線(xian)(xian)。在(zai)某(mou)些時候，我們可(ke)以發(fa)現，價(jia)格運行在(zai)兩條(tiao)相互平(ping)行的(de)趨勢線(xian)(xian)之間，上面的(de)線(xian)(xian)為(wei)壓力線(xian)(xian)，下面的(de)線(xian)(xian)為(wei)支(zhi)撐(cheng)(cheng)線(xian)(xian)。兩條(tiao)趨勢線(xian)(xian)就構成了通道或形態。
