The KDJ line is an important indicator to analyze the stock price, so it is an indicator of the relationship between the closing price, the highest price and the lowest price, which mainly reflects the short-term overbought and oversold of the stock price, so it was put forward by American stock investment experts.

KDJ indicators can be used for stocks, funds, foreign exchange and money funds.

Its k value is d value, and its exponent value is between zero and one hundred. If the value of k is greater than 80%, it is over-full. Then the k value is less than 20%, so it is oversold. Then there is also an indicator of KDJ, which can also provide a basis for us to make some judgments in other aspects. Then one aspect is that when K is on the rise, when the value of K is greater than the value of D, and the value of K crosses the K line and the D line, then buy the signal. If the value of k is less than the value of d in the downtrend, and the K line crosses the D line, then it is a sell signal.

On the other hand, KD index is mainly suitable for short-term judgment. On the other hand, it is the value of k and d, and the indicator KDJ indicates that it is not suitable for inactive stocks with small trading volume. In addition, we can also value their development speed through the K-value D-line. If his speed slows down, we can also suggest that this may be a signal to turn the tide.