Many people ask how to interpret RSI. Actually, this indicator is more useful than you think. I've recently been explaining this to beginners, so I might as well organize my thoughts.

First, the conclusion: RSI is a tool used to determine whether the market is overreacting. When this indicator rises above 70, it suggests the market may be overly optimistic and at risk of a pullback; conversely, when it drops below 30, it indicates the market is overly pessimistic and may be gearing up for a reversal. Simply put, how to read RSI? Just look at whether it crosses these two lines.

But there's a trap many people fall into. I've seen traders in strong upward trends rush to short when RSI hits 80 or 90, only for the price to keep climbing. This is a classic case of ignoring the strength of the market trend. RSI doesn't necessarily mean overbought must reverse; it just tells you that market sentiment is a bit extreme and caution is warranted.

Regarding the basics of RSI, the Relative Strength Index measures the strength of upward and downward movements over a certain period, scaled between 0 and 100. You can think of it as a thermometer of market sentiment. When buying pressure dominates, the value rises; when selling pressure is strong, it falls.

Calculating this indicator involves several steps. First, select a time period (usually the default 14 candles), then calculate the daily gains and losses. Next, compute the average gain and average loss over that period, and divide the two to get the RS value. Finally, apply the formula RSI = 100 - (100 / (1 + RS)) to get a number between 0 and 100.

Parameter settings are an area many overlook. The default RSI 14 suits most traders, especially those trading on 4-hour or daily charts. But if you're a short-term trader, you might try RSI 6, which makes the indicator more responsive and signals more frequently. Conversely, RSI 24 is better for long-term investors, filtering out noise and increasing reliability.

From my experience, no parameter is absolutely the best. The key is to find what fits your trading style. Short-term traders prefer 6, long-term investors stick with 24, and swing traders often use the default 14.

Besides overbought/oversold zones, RSI divergence is also an important signal. Divergence occurs when the price makes a new high but RSI doesn't confirm with a new high, or the price hits a new low but RSI doesn't break the previous low. Bearish divergence usually hints at weakening upward momentum, while bullish divergence suggests waning downward pressure. But remember, divergence doesn't guarantee a trend reversal; it just indicates that momentum may be fading.

Another commonly overlooked method is using the RSI midline to identify trend changes. When RSI crosses above or below 50, it may signal a shift in market strength. Combining this with longer-period RSI signals can make the indication more reliable.

Finally, I want to emphasize that no matter how you interpret RSI, never rely on it exclusively. I've seen too many traders enter positions based solely on RSI signals and get caught by false breakouts. A more prudent approach is to combine RSI with MACD, moving averages, or candlestick patterns for confirmation. Especially in trending markets, RSI can give misleading signals, so multiple indicators should verify each other.

In summary, RSI is an easy-to-use but detail-sensitive tool. Adjust the parameters to suit your trading style, develop a strategy around it, and confirm signals with other indicators. That way, you can maximize its potential. When watching markets on Gate, try experimenting with different RSI settings to observe the market and find the rhythm that works best for you.