通达信MACD背离（MACD类）指标公式

买卖信号

**买入信号：** 1. **低位金叉**：DIFF上穿DEA且DIFF<-0.1（显示"低位金叉"文字，黄色柱状线） 2. **二次金叉**：DIFF上穿DEA且DEA<0，且21日内出现过一次金叉（显示"二次金叉"文字和图标，紫色柱状线） 3. **底背离**：价格创出新低但DIFF未创新低，且DIFF上穿DEA（显示"底背离"文字，绿色柱状线，红色斜线） 4. **三全项**：低位金叉、二次金叉、底背离同时满足（显示"三全项"文字，蓝色粗体） **卖出信号：** 1. **顶背离**：价格创出新高但DIFF未创新高，且DEA上穿DIFF（绿色斜线）

用法

1. **适用场景**：适用于中长线趋势判断，配合MACD指标使用 2. **买入时机**：出现低位金叉或二次金叉时考虑买入，底背离是较强的买入信号，三全项信号最为可靠 3. **卖出时机**：出现顶背离时考虑卖出或减仓 4. **注意事项**： - 低位金叉要求DIFF<-0.1，表示在相对低位发生金叉 - 二次金叉需要21日内已经有过一次金叉，说明是第二次金叉 - 背离信号需要结合成交量和均线确认 - 三全项是多个买入条件的组合，信号更强但较少出现

公式源码

DIFF:EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:EMA(DIFF,9);
macd:2*(DIFF-DEA), COLORSTICK,LINETHICK2;
低位金叉:=crOSS(DIFF,DEA) AND DIFF<-0.1;
STICKLINE(低位金叉,0,0.08,6,0),COLORYELLOW;
DRAWTEXT(低位金叉,0.16,' 低位金叉'),COLORWHITE;
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
二次金叉:=CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;
STICKLINE(二次金叉,0,0.06,6,0),COLORFF00FF;
DRAWICON(二次金叉,DEA*0.9,1) ;
DRAWTEXT(二次金叉,0.2,' 二次金叉'),COLORYELLOW;
A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));
底背离:=REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA);
STICKLINE(底背离,0,0.03,6,0),COLOR00FF00;
底背:DRAWLINE(A1=0,DEA,底背离,DEA,0),COLORRED,LINETHICK4;
DRAWTEXT(底背离,0.12,' 底背离'),COLORFF00FF;
A2:=BARSLAST(REF(CROSS(DEA,DIFF),1));
顶背离:=REF(CLOSE,A2+1)<CLOSE AND REF(DIFF,A2+1)>DIFF AND CROSS(DEA,DIFF);
顶背:DRAWLINE(A2=0,DEA,顶背离,DEA,0),COLORGREEN,LINETHICK4;
DRAWTEXT(低位金叉 AND 二次金叉 AND 底背离,0.25,'三全项'),COLOR0000FF,LINETHICK2;
底背离>0;
二次金叉>0;
顶背离=0;
低位金叉>0;