---
title: "双重指数移动均线 - 趋势指标 - 技术指标 - 价格图表, 技术和基本面分析 - MetaTrader 5帮助"
description: "双指数移动平均线技术指标(DEMA)由Patrick Mulloy开发并于1994年2月 \"股票与商品期货的技术分析\"杂志中出版。用于平滑价格系列并被直接应用到金融证券的价格图表中。此外，它还用于平滑其他指标的价值... - 双重指数移动均线 - 趋势指标 - 技术指标"
image: "https://www.metatrader5.com/i/logo_metatrader5.png"
url: "https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/dema"
---

[MetaTrader 5帮助](https://www.metatrader5.com/zh/terminal/help) → [价格图表, 技术和基本面分析](https://www.metatrader5.com/zh/terminal/help/charts_analysis) → [技术指标](https://www.metatrader5.com/zh/terminal/help/charts_analysis/indicators) → [趋势指标](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators) → 双重指数移动均线

# 双重指数移动均线

双指数移动平均线技术指标(DEMA)由Patrick Mulloy开发并于1994年2月 "股票与商品期货的技术分析"杂志中出版。用于平滑价格系列并被直接应用到金融证券的价格图表中。此外，它还用于平滑其他指标的价值。

该指标的优势是在锯齿状的价格移动中清除错误信号并允许趋势强劲时保持仓位。

> 您可以通过在[MQL5 Wizard](https://www.metatrader5.com/en/automated-trading/mql5wizard)创建一个EA交易来检测这个指标的[交易信号](https://www.mql5.com/zh/docs/standardlibrary/ExpertClasses/CSignal/signal_dema)。

![双重指数移动均线](https://www.metatrader5.com/i/help/terminal/en/dema.png)

## 计算

该指标基于[指数移动平均线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/ma#ema) (EMA). 从EMA值中查看价格偏差错误：

```
err(i) = Price(i) - EMA(Price, N, i)
```

此处:

err(i) ― 当前EMA误差;
Price(i) ― 当前价格;
EMA(Price, N, i) ― 价格系列的以N为周期的EMA的当前值。

添加指数平均线错误值到价格指数移动平均数值，可以获得EDMA；

```
DEMA(i) = EMA(Price, N, i) + EMA(err, N, i) = EMA(Price, N, i) + EMA(Price - EMA(Price, N, i), N, i) =
```

```
= 2 * EMA(Price, N, i) - EMA(Price - EMA(Price, N, i), N, i) = 2 * EMA(Price, N, i) - EMA2(Price, N, i)
```

此处:

EMA(err, N, i) ― 误差err的指数均线的当前值;
EMA2(Price, N, i) ― 价格的二重连续平滑的当前值。

## In this section

- [自适应移动均线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/ama)
- [平均方向性走势指标](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/admi)
- [Wilder 平均方向性走势指标](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/admiw)
- [布林带](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/bb)
- 双重指数移动均线
- [包络线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/envelopes)
- [分形自适应移动均线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/fama)
- [Ichimoku Kinko Hyo](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/ikh)
- [移动均线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/ma)
- [抛物线转向](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/psar)
- [标准方差](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/sd)
- [三重指数移动均线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/tema)
- [可变指数动态均线](https://www.metatrader5.com/zh/terminal/help/indicators/trend_indicators/vida)

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