所謂趨(qu)(qu)勢線(xian)就(jiu)是上(shang)(shang)(shang)漲行情中(zhong)兩個(ge)以上(shang)(shang)(shang)的(de)低點的(de)連(lian)線(xian)以及下跌行情中(zhong)兩個(ge)以上(shang)(shang)(shang)高點的(de)連(lian)線(xian)，前者被稱上(shang)(shang)(shang)升趨(qu)(qu)勢線(xian)，后者被稱為下降(jiang)趨(qu)(qu)勢線(xian)。上(shang)(shang)(shang)升趨(qu)(qu)勢線(xian)的(de)功(gong)能(neng)在于能(neng)夠顯示出價(jia)(jia)格(ge)(ge)上(shang)(shang)(shang)升的(de)支撐位，一旦價(jia)(jia)格(ge)(ge)在波動(dong)過(guo)程中(zhong)跌破(po)此線(xian)，就(jiu)意(yi)味著行情可(ke)能(neng)出現反轉，由漲轉跌；下降(jiang)趨(qu)(qu)勢線(xian)的(de)功(gong)能(neng)在于能(neng)夠顯示出價(jia)(jia)格(ge)(ge)下跌過(guo)程中(zhong)回(hui)(hui)升的(de)阻(zu)力，一旦價(jia)(jia)格(ge)(ge)在波動(dong)中(zhong)向(xiang)上(shang)(shang)(shang)突破(po)此線(xian)，就(jiu)意(yi)味著價(jia)(jia)格(ge)(ge)可(ke)能(neng)會止(zhi)跌回(hui)(hui)漲。
二、投(tou)資者在(zai)畫趨勢線時應(ying)注(zhu)意以(yi)下幾點：
1.趨(qu)(qu)勢(shi)(shi)線(xian)(xian)根據價(jia)格(ge)波動(dong)時間(jian)的長(chang)(chang)短分為長(chang)(chang)期趨(qu)(qu)勢(shi)(shi)線(xian)(xian)、中期趨(qu)(qu)勢(shi)(shi)線(xian)(xian)和短期趨(qu)(qu)勢(shi)(shi)線(xian)(xian)，時間(jian)周期越長(chang)(chang)，趨(qu)(qu)勢(shi)(shi)線(xian)(xian)的有(you)效性就(jiu)越高(gao)。
2.趨勢(shi)線(xian)連接的(de)高(gao)點或低(di)點的(de)數量越多，有效(xiao)性就(jiu)越強
3.對趨勢線的短暫突(tu)破(po)
4.趨(qu)勢線不應過于陡峭，否則很(hen)容易被橫(heng)向整(zheng)理(li)突破，失去(qu)分析意(yi)義
三(san)、趨勢線使用(yong)技巧和方(fang)法:
1.從切線(xian)(xian)理(li)論角度看，趨勢線(xian)(xian)是其中的一部分，它(ta)是將波動運行的價格的低(di)點(dian)(dian)(dian)和(he)低(di)點(dian)(dian)(dian)連接或高點(dian)(dian)(dian)和(he)高點(dian)(dian)(dian)連接而形成的直線(xian)(xian)。如果價格是按(an)一個低(di)點(dian)(dian)(dian)比一個低(di)點(dian)(dian)(dian)高的運行方(fang)式來(lai)(lai)運行，所(suo)畫出(chu)來(lai)(lai)的趨勢線(xian)(xian)就(jiu)是上升(sheng)趨勢線(xian)(xian)；如果價格是按(an)一個高點(dian)(dian)(dian)比一個高點(dian)(dian)(dian)低(di)的運行方(fang)式來(lai)(lai)運行，所(suo)畫出(chu)來(lai)(lai)的趨勢線(xian)(xian)就(jiu)是下(xia)降趨勢線(xian)(xian)。還有(you)一種是價格的低(di)點(dian)(dian)(dian)和(he)高點(dian)(dian)(dian)橫向延(yan)伸，沒有(you)明顯的上升(sheng)和(he)下(xia)降趨勢，這(zhe)就(jiu)是橫盤整(zheng)理(li)或稱為箱(xiang)形整(zheng)理(li)。
2.趨勢(shi)線(xian)(xian)可(ke)以(yi)分成(cheng)支(zhi)撐(cheng)線(xian)(xian)和(he)(he)(he)壓力線(xian)(xian)，將(jiang)價(jia)格(ge)(ge)波段(duan)運行的低(di)點和(he)(he)(he)低(di)點連(lian)接成(cheng)一條直(zhi)線(xian)(xian)，就是支(zhi)撐(cheng)線(xian)(xian)；將(jiang)價(jia)格(ge)(ge)波段(duan)運行的高(gao)點和(he)(he)(he)高(gao)點連(lian)接成(cheng)一條直(zhi)線(xian)(xian)，就是壓力線(xian)(xian)。趨勢(shi)線(xian)(xian)的長短與其重要性成(cheng)正比，長期趨勢(shi)線(xian)(xian)和(he)(he)(he)中(zhong)期趨勢(shi)線(xian)(xian)第一點和(he)(he)(he)第二點的距離不應太近(jin)，如距離過近(jin)，所形成(cheng)的趨勢(shi)線(xian)(xian)的重要性將(jiang)降低(di)。
3.趨(qu)勢(shi)線(xian)的角度(du)至關重要，過(guo)于平緩的角度(du)顯示出(chu)力(li)度(du)不夠，不容易馬上產生(sheng)大行情；過(guo)于陡峭(qiao)的趨(qu)勢(shi)線(xian)則不能持久，往往容易很快轉(zhuan)變趨(qu)勢(shi)。
4.著名角(jiao)(jiao)度線(xian)大師(shi)江恩認為：４５度角(jiao)(jiao)的趨勢線(xian)非常可靠，也就(jiu)是江恩所(suo)說的１×１角(jiao)(jiao)度線(xian)。
5.確立趨勢線對于操作具有非常重(zhong)要(yao)的意義(yi)。"順勢而為"就是其中的精華。
6.支(zhi)撐(cheng)(cheng)線(xian)(xian)(xian)和(he)壓(ya)力(li)線(xian)(xian)(xian)是(shi)可以相(xiang)互轉化的(de)，當價格從(cong)上(shang)向下突破一(yi)條支(zhi)撐(cheng)(cheng)線(xian)(xian)(xian)后(hou)，原有的(de)支(zhi)撐(cheng)(cheng)線(xian)(xian)(xian)將(jiang)可能轉變為(wei)壓(ya)力(li)線(xian)(xian)(xian)；而當價格從(cong)下向上(shang)突破一(yi)條壓(ya)力(li)線(xian)(xian)(xian)后(hou)，原有的(de)壓(ya)力(li)線(xian)(xian)(xian)也將(jiang)可能轉變為(wei)支(zhi)撐(cheng)(cheng)線(xian)(xian)(xian)。在(zai)某些時候，我們可以發(fa)現，價格運行(xing)在(zai)兩條相(xiang)互平行(xing)的(de)趨勢線(xian)(xian)(xian)之間，上(shang)面的(de)線(xian)(xian)(xian)為(wei)壓(ya)力(li)線(xian)(xian)(xian)，下面的(de)線(xian)(xian)(xian)為(wei)支(zhi)撐(cheng)(cheng)線(xian)(xian)(xian)。兩條趨勢線(xian)(xian)(xian)就構成了通道或形態。
