振荡指标 MomentumMean ReversionTrend Filter 在 Builder 中可用
Relative Strength Index (RSI)
RSI
The RSI is a bounded 0–100 momentum oscillator that measures the speed of recent price changes, used to read overbought and oversold conditions, divergence, and momentum bias — and one of the easiest indicators to turn into a no-code EA.
- Default period
- 14
- Common levels
- 70 / 30
- Indicator range
- 0–100
示意性 — 合成数据，非实时报价。
What RSI tells you
RSI compresses recent price action into one bounded number. It compares the size of recent gains to recent losses over a lookback window and plots the result on a fixed 0–100 scale — so you can read at a glance whether momentum is stretched, fading, or turning.
- Above 70: momentum may be stretched to the upside
- Below 30: momentum may be stretched to the downside
- Around 50: balance between buyers and sellers
- 1 Price changes bar to bar
- 2 Average gains vs average losses
- 3 RSI value from 0 to 100
显示公式与计算详情
The RSI is derived from the average gain and the average loss over the chosen period — 14 bars by default:
- For each bar, record the change from the previous applied price. Positive changes are gains; negative changes are losses, stored as positive numbers.
- Compute the average gain and the average loss over the lookback period. Wilder uses a smoothed moving average, so each new bar updates the running averages rather than recomputing from scratch.
- Form the Relative Strength:
RS = average gain / average loss. - Convert to the bounded index:
RSI = 100 − (100 / (1 + RS)).
When the average loss is zero the formula returns 100; when the average gain is zero it returns 0. Wilder’s smoothing is why the RSI needs a few bars to warm up after a chart loads, and why platforms that use a simple average instead of the smoothed one can show tiny differences on the same data. J. Welles Wilder introduced the formula in 1978, and it is unchanged in MetaTrader 5 today.
In MQL5 the call is iRSI(symbol, period, ma_period, applied_price) and it returns a handle to a single buffer. applied_price is a full ENUM_APPLIED_PRICE argument — the step-one price series above is PRICE_CLOSE only because that is the default, not because the indicator is fixed to closes.
信号
RSI 提供的可回测信号 — 及每个信号适合的市场状态。
Centreline Crossover
Builder 可实现Divergence
高级逻辑Failure Swing
高级逻辑MT5 实现
MetaTrader 5 实际计算和绘制的内容——本页每条规则的依据。
缓冲区
| 索引 | 缓冲区 | MT5 中的绘制方式 | 存放内容 |
|---|---|---|---|
| 0 | MAIN_LINE | Line | The RSI value itself, 0–100. iRSI publishes a single buffer — there is no signal line to copy. |
最佳适用场景 / 谨慎使用
没有任何指标具有普适优势。以下是 RSI 发挥作用的场景 — 以及可能误导的场景。
最佳适用场景
- Ranging markets
- Clear momentum shifts
- With a volatility filter
- With trend confirmation
谨慎使用
- Strong one-way trends
- RSI alone as an entry
- Low-liquidity periods
- Optimised settings without validation
构建 RSI 策略
将信号接入进场和出场规则，然后导出可编译的 MT5 EA — 无需编写代码。
- RSI (14)
- RSI below 30
- Open Buy · SL 30 / TP 60
- RSI above 70 → Open Sell
将 RSI 与其他指标组合
单一指标很少独立有效。这些组合弥补了 RSI 的盲点。
RSI + ATR
- RSI < 30
- ATR contracting
- Buy
No template pairs RSI with ATR yet. The closest ready-made one is Range-filter Reversal (hl_range_reversal), which gates the same RSI entry on a recent high-low range instead.
打开 Builder →RSI + Moving Average
- EMA 5 / 20 / 60 aligned up
- RSI > 50
- Buy
RSI + Bollinger Bands
- Price at lower band
- RSI < 30
- Buy
The Bollinger Bounce template trades band touches only — add an RSI node and a Compare node to it to require the momentum confirmation described here.
打开 Builder →参数
在您自己的货币对和时间框架上验证的起始值 — 非保证设置。
| 参数 | 默认值 | 建议测试范围 | 功能说明 |
|---|---|---|---|
| Period | 14 | 2–50 | Lookback window for the smoothed average gain and loss. Shorter reacts faster and whipsaws more; longer is smoother and slower. |
| Applied price | Close | Close / Open / High / Low / Median / Typical / Weighted | Price series the gains and losses are measured on. Close is the MT5 default; the other six are the rest of ENUM_APPLIED_PRICE and all are accepted by iRSI. |
| Overbought | 70 | 60–90 | Upper zone. A reading above it means strong up-momentum, not a guaranteed reversal. This is your level, not an MT5 setting — iRSI has no threshold argument. |
| Oversold | 30 | 10–40 | Lower zone. Strong down-momentum — pair with a filter before fading it. Also your level rather than an indicator input. |
| Centreline | 50 | — | The momentum-bias switch: persistently above 50 is bullish, below is bearish. A convention rather than something to sweep. |
初始预设
Fast response 7–9 Reacts quickly, more whipsaw
Standard 14 Wilder's default baseline
Smooth 21+ Fewer, slower signals
市场示例
RSI 有效的场景、失效的场景，以及过滤器如何改变结果。
Successful reversal
In a ranging market the RSI drops into oversold, price stalls, and the fade back toward the mean plays out — the textbook mean-reversion case.
False signal in a strong trend
In a one-way trend the RSI sits above 70 for bar after bar. Selling every overbought print here fights the move and donates money.
Filtered setup improvement
Add a trend or volatility filter and the same overbought reading is suppressed while price keeps trending — the filter is what turns a naive fade into a survivable one.
FAQ
- What RSI period should I use for an EA?
- 14 is Wilder's default and the right starting point. Shorter periods (7–9) react faster but whipsaw more; longer periods (21+) are smoother but slower. Treat 14 as a documented baseline to re-validate on your pair and timeframe in a backtest, not as portable truth.
- Does RSI above 70 mean I should sell?
- No. A reading above 70 means momentum is strong, not that a reversal is due. In a trend the RSI can stay overbought for weeks. Use 70/30 as context and confirm with structure, a trend filter, or divergence before acting.
- Can I calculate RSI on something other than the close?
- Yes. MQL5's iRSI takes an ENUM_APPLIED_PRICE argument, so RSI can be built from Open, High, Low, Median, Typical or Weighted price as well as Close. Close is the default and by far the most common choice; the others mainly matter when you want the RSI to react to the whole bar's range rather than its settlement.
- Is RSI better for trend or mean-reversion EAs?
- Both, but differently. Fading 70/30 is a mean-reversion use and needs a range filter or it bleeds in trends; using the 50 line as a momentum-bias switch is a trend use. The same indicator becomes two different strategies depending on which signal you wire in.
- Can I build an RSI EA without coding?
- Yes, for the level-based signals. The RSI Reversal template wires RSI 14 into buy-below-30 and sell-above-70 rules with the period, levels and applied price exposed as EA inputs, so you can compile, backtest and optimise it per pair without writing MQL5. Divergence and failure swings are the exception — they need multi-bar swing detection that the node palette does not cover.
- How should I validate RSI settings before going live?
- Backtest on quality tick data first, then run the EA on a demo account before risking money. When optimising, hold back data the search never saw and prefer settings that stay profitable across periods over the single in-sample peak — chasing that peak is overfitting the noise. No default or preset here is a performance promise; every value is a starting point to re-validate on your own pair and broker.
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