diff --git a/js/web/docs/webnn-operators.md b/js/web/docs/webnn-operators.md
index 987e063485..725d11b9d5 100644
--- a/js/web/docs/webnn-operators.md
+++ b/js/web/docs/webnn-operators.md
@@ -61,16 +61,16 @@ operators and the supported opset domain/versions in **WebNN EP** by ONNX Runtim
 | Pow | ai.onnx(7-11, 12, 13-14, 15+) | pow | ✓ | ✓ | |
 | PRelu | ai.onnx(7-8, 9-15, 16+) | prelu | ✓ | ✓ | WebNN CPU backend restricts the last dimension of input and slope to be same (Chromium issue: https://issues.chromium.org/issues/335517470) |
 | Reciprocal | ai.onnx(7-12, 13+) | reciprocal | ✓ | ✓ | |
-| ReduceL1 | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceL1 | ✗ | ✓ | Input 'axes' if present should be a constant |
-| ReduceL2 | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceL2 | ✗ | ✓ | Input 'axes' if present should be a constant |
-| ReduceLogSum| ai.onnx(7-10, 11-12, 13-17, 18+) | reduceLogSum| ✗ | ✓ | Input 'axes' if present should be a constant |
-| ReduceLogSumExp | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceLogSumExp | ✗ | ✓ | Input 'axes' if present should be a constant |
+| ReduceL1 | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceL1 | ✓ | ✓ | Input 'axes' if present should be a constant |
+| ReduceL2 | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceL2 | ✓ | ✓ | Input 'axes' if present should be a constant |
+| ReduceLogSum| ai.onnx(7-10, 11-12, 13-17, 18+) | reduceLogSum| ✓ | ✓ | Input 'axes' if present should be a constant |
+| ReduceLogSumExp | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceLogSumExp | ✓ | ✓ | Input 'axes' if present should be a constant |
 | ReduceMax | ai.onnx(7-10, 11, 12, 13-17, 18-19, 20+) | reduceMax | ✓ | ✓ | Input 'axes' if present should be a constant |
 | ReduceMean | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceMean | ✓ | ✓ | Input 'axes' if present should be a constant |
 | ReduceMin | ai.onnx(7-10, 11, 12, 13-17, 18-19, 20+) | reduceMin | ✓ | ✓ | Input 'axes' if present should be a constant |
 | ReduceProd | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceProduct | ✓ | ✓ | Input 'axes' if present should be a constant |
 | ReduceSum | ai.onnx(7-10, 11-12, 13+) | reduceSum | ✓ | ✓ | Input 'axes' if present should be a constant |
-| ReduceSumSquare | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceSumSquare | ✗ | ✓ | Input 'axes' if present should be a constant |
+| ReduceSumSquare | ai.onnx(7-10, 11-12, 13-17, 18+) | reduceSumSquare | ✓ | ✓ | Input 'axes' if present should be a constant |
 | Relu | ai.onnx(7-12, 13, 14+) | relu | ✓ | ✓ | |
 | Reshape | ai.onnx(7-12, 13, 14-18, 19-20, 21+) | reshape | ✓ | ✓ | Input 'shape' should be a constant, 0 dimension value in 'shape' is not supported |
 | Resize | ai.onnx(11-12, 13-17, 18, 19+) | resample2d | ✓ | ✓ | Only supports 4-D input, exclude_outside != 0, input 'scales' and 'sizes' if present must be a constant, 'linear' and 'nearest' modes |
diff --git a/onnxruntime/core/providers/webnn/builders/helper.h b/onnxruntime/core/providers/webnn/builders/helper.h
index 395a0b40e5..4ee3f891f9 100644
--- a/onnxruntime/core/providers/webnn/builders/helper.h
+++ b/onnxruntime/core/providers/webnn/builders/helper.h
@@ -209,16 +209,16 @@ static const InlinedHashMap<std::string, WebnnOpInfo> op_map = {
     {"Pow", {"pow", true}},
     {"PRelu", {"prelu", true}},
     {"Reciprocal", {"reciprocal", true}},
-    {"ReduceL1", {"reduceL1", false}},
-    {"ReduceL2", {"reduceL2", false}},
-    {"ReduceLogSum", {"reduceLogSum", false}},
-    {"ReduceLogSumExp", {"reduceLogSumExp", false}},
+    {"ReduceL1", {"reduceL1", true}},
+    {"ReduceL2", {"reduceL2", true}},
+    {"ReduceLogSum", {"reduceLogSum", true}},
+    {"ReduceLogSumExp", {"reduceLogSumExp", true}},
     {"ReduceMax", {"reduceMax", true}},
     {"ReduceMean", {"reduceMean", true}},
     {"ReduceMin", {"reduceMin", true}},
     {"ReduceProd", {"reduceProduct", true}},
     {"ReduceSum", {"reduceSum", true}},
-    {"ReduceSumSquare", {"reduceSumSquare", false}},
+    {"ReduceSumSquare", {"reduceSumSquare", true}},
     {"Relu", {"relu", true}},
     {"Reshape", {"reshape", true}},
     {"Resize", {"resample2d", true}},