交易量图表的应用只要有以下两个目的：
1、 确认价格变化：如果趋势的变化没有伴随着交易量变化，那么该趋势就不是入场的可靠依据。
2、 预期价格变化：交易量的变化通常会导致价格的变化。
如何判断趋势中的交易信号
趋势确认：价格和交易量的同时升高代表了一个良好的上升趋势，而良好的下降趋势表现为价格下降和交易量升高。
趋势走弱表现为上升趋势中的价格升高，交易量减少；下降趋势中价格下降和交易量的减少。 长期的价格上涨和低交易量意味着空头势力缺乏，长期的价格下降、低交易量则说明多头势力有限。
集散量反映的是多头还是空头控制着市场，是一个反转信号。交易量聚集意味着市场被买方控制。下降趋势停滞并且交易量维持在高位，表明空头逐渐失去控制。日内市场受多头控制可以从下面两种情况推断出：交易量增加（相对于昨天），收盘价升高；或趋势下降之后，价格变化幅度小，并伴随着交易量增加。
分散说明市场被卖方控制。在上升趋势中价格停滞，但交易量增加说明空头逐渐控制市场并很有可能发生反转。以下两种情况说明日内市场被空头控制：相对于昨天交易量增加，收盘价降低；或趋势上升的过程中价格变动幅度小，交易量没有明显增加。
突破
当在一个区间内交易的时候，交易量可以显示价格向上或向下突破的可能性：高交易量出现在价格高峰之前，表明向上突破的可能性大；价格低谷期的高交易量则说明向下突破的可能性大。同时，交易量可以被用来确认突破：突破后的高交易量预示着有效突破，而低交易量则表明突破力度弱。
Volume Patterns
Volume is used for two major purposes:
1. To confirm price changes: if the start of a trend is not accompanied by an increase in volume it is considered to be weak and lacking commitment.
2. To anticipate changes in price: increases in volume often precede changes in price. See Accumulation and Distribution for more detail.
Trading Signals
Trending Markets
Short-term
Trend confirmation:
• Rising prices and rising volume signal a healthy up-trend.
• Falling prices and rising volume signal a healthy down-trend.
Trend weakness:
• Rising prices and falling volume signal trend weakness.
• Falling prices and falling volume may signal trend weakness. See Low Volume in Down-trends for further details.
A large range with low volume indicates a lack of interest from sellers (if price is rising) or buyers (if price is falling).
Long-term
Trend confirmation:
• Higher peaks with higher volume at peaks signal a healthy up-trend.
• Lower troughs with higher volume at troughs signal a healthy down-trend.
Trend weakness:
• Higher peaks with lower volume at peaks signal that the up-trend is weakening.
• Lower troughs with lower volume at troughs signal that the down-trend is weakening.
Accumulation and Distribution
Accumulation and distribution indicate who is in control of the market and often signal a reversal.
Trading ranges represent longer term accumulation or distribution.
Accumulation
Accumulation is when the market is controlled by buyers.
A down-trend that stalls while volume remains high signals that accumulation is taking place. Sellers have lostcontrol to buyers and a reversal is likely.
An Accumulation Day occurs when either:
• Volume increases (compared to yesterday) and closing price moves higher, or
• After trending downwards, there is little or no price movement and an increase in volume.
Distribution
Distribution is when the market is controlled by sellers.
An up-trend that stalls while volume remains high is a sign that distribution is taking place. Buyers have lostcontrol to sellers and a reversal is likely.
A Distribution Day occurs when either:
• Volume increases (compared to yesterday) and closing price moves lower, or
• After trending upwards, there is little or no price movement and an increase in volume.
Breakouts
When price is trading in a range, volume may indicate in which direction a breakout is most likely to occur:
• Higher volume before (leading up to) peaks means that an upward breakout is more likely
• Higher volume before troughs indicates that a downward breakout is more likely
Use volume to confirm the breakout:
• High volume immediately after the breakout indicates a healthy breakout.
• Low volume immediately after the breakout indicates weakness.
文章翻译由兄弟财经提供
本文来源：http://www.incrediblecharts.com/technical/volume_patterns.php