diff --git a/src/component/axisPointer/axisTrigger.ts b/src/component/axisPointer/axisTrigger.ts
index 082b61c0d9..1bf0f7f409 100644
--- a/src/component/axisPointer/axisTrigger.ts
+++ b/src/component/axisPointer/axisTrigger.ts
@@ -164,10 +164,13 @@ export default function axisTrigger(
const coordSysContainsPoint = isIllegalPoint || coordSys.containPoint(point);
each(coordSysAxesInfo.coordSysAxesInfo[coordSysKey], function (axisInfo, key) {
+ // Allow connected charts to bypass illegalPoint check and always show shared
+ // axisPointer regardless of series data.
+ const isAlwaysShowContent = axisInfo.axisPointerModel.get('alwaysShowContent');
const axis = axisInfo.axis;
const inputAxisInfo = findInputAxisInfo(inputAxesInfo, axisInfo);
// If no inputAxesInfo, no axis is restricted.
- if (!shouldHide && coordSysContainsPoint && (!inputAxesInfo || inputAxisInfo)) {
+ if (isAlwaysShowContent || !shouldHide && coordSysContainsPoint && (!inputAxesInfo || inputAxisInfo)) {
let val = inputAxisInfo && inputAxisInfo.value;
if (val == null && !isIllegalPoint) {
val = axis.pointToData(point);
diff --git a/src/util/types.ts b/src/util/types.ts
index 2a37e39a0f..fb35031480 100644
--- a/src/util/types.ts
+++ b/src/util/types.ts
@@ -1662,6 +1662,8 @@ type LabelFormatterParams = {
export interface CommonAxisPointerOption {
show?: boolean | 'auto'
+ alwaysShowContent?: boolean
+
z?: number;
zlevel?: number;
diff --git a/test/axis-pointer-sync.html b/test/axis-pointer-sync.html
new file mode 100644
index 0000000000..041f1ee8df
--- /dev/null
+++ b/test/axis-pointer-sync.html
@@ -0,0 +1,172 @@
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