diff --git a/core/types/wo_test.go b/core/types/wo_test.go
index c3a4ed2b0..741f777a8 100644
--- a/core/types/wo_test.go
+++ b/core/types/wo_test.go
@@ -1,6 +1,7 @@
 package types
 
 import (
+	"fmt"
 	"math/big"
 	"testing"
 
@@ -11,8 +12,8 @@ import (
 func woTestData() (*WorkObject, common.Hash) {
 	wo := &WorkObject{}
 	wo.SetWorkObjectHeader(&WorkObjectHeader{})
-	wo.woHeader.SetHeaderHash(common.HexToHash("0x123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0"))
-	wo.woHeader.SetParentHash(common.HexToHash("0x23456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef12"))
+	wo.woHeader.SetHeaderHash(EmptyHeader().Hash())
+	wo.woHeader.SetParentHash(EmptyHeader().Hash())
 	wo.woHeader.SetNumber(big.NewInt(1))
 	wo.woHeader.SetDifficulty(big.NewInt(123456789))
 	wo.woHeader.SetPrimeTerminusNumber(big.NewInt(42))
@@ -28,16 +29,20 @@ func woTestData() (*WorkObject, common.Hash) {
 	return wo, wo.Hash()
 }
 
+var (
+	expectedWoHash    = common.HexToHash("0x7a107825db4e54d262248b6d619679a94e8235a2ae01fd06b4e3819179b81d3a")
+	expectedUncleHash = common.HexToHash("0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347")
+)
+
 func TestWoHash(t *testing.T) {
 	_, actualHash := woTestData()
-	expectedHash := common.HexToHash("0x6c0e69beaec348d6323fc1d8bfdf2343ce5f085dcfd327fedd2333129bf452fc")
-	require.Equal(t, expectedHash, actualHash, "Hash not equal to expected hash")
+	require.Equal(t, expectedWoHash, actualHash, "Hash not equal to expected hash")
 }
 
 func TestWoSealHash(t *testing.T) {
 	testWo, _ := woTestData()
 	actualHash := testWo.SealHash()
-	expectedHash := common.HexToHash("0x8ea659d6d9e1da464ae1a505cc19b1fe5f3df1e7013168227be1c290b3edaf01")
+	expectedHash := common.HexToHash("0x83fd7f1dbd2f62d320c2dd974e2d1b3ce8108594a7c9e3aa99dfd993ca106090")
 	require.Equal(t, expectedHash, actualHash, "Seal hash not equal to expected hash")
 }
 
@@ -68,7 +73,7 @@ func FuzzNumberHash(f *testing.F) {
 func FuzzTxHash(f *testing.F) {
 	fuzzHash(f,
 		func(woh *WorkObjectHeader) common.Hash { return woh.TxHash() },
-		func(woh *WorkObjectHeader, hash common.Hash) { woh.SetTxHash(hash)})
+		func(woh *WorkObjectHeader, hash common.Hash) { woh.SetTxHash(hash) })
 }
 
 func FuzzMixHash(f *testing.F) {
@@ -117,6 +122,61 @@ func FuzzNonceHash(f *testing.F) {
 		func(woh *WorkObjectHeader, nonce uint64) { woh.nonce = EncodeNonce(nonce) })
 }
 
+func TestCalcUncleHash(t *testing.T) {
+	tests := []struct {
+		uncleNum          int
+		expectedUncleHash common.Hash
+		expectedWoHash    common.Hash
+		shouldPass        bool
+	}{
+		{
+			uncleNum:          0,
+			expectedUncleHash: expectedUncleHash,
+			expectedWoHash:    expectedWoHash,
+			shouldPass:        true,
+		},
+		{
+			uncleNum:          1,
+			expectedUncleHash: expectedUncleHash,
+			expectedWoHash:    expectedWoHash,
+			shouldPass:        false,
+		},
+		{
+			uncleNum:          5,
+			expectedUncleHash: common.HexToHash("0x3c9dd26495f9a6ddf36e1443bee2ff0a3bb59b0722a765b145d01ab1f78ccd44"),
+			expectedWoHash:    common.HexToHash("0x0cf899993d6dd984fdc862a159d2740562c266712d5505168480bade496816b2"),
+			shouldPass:        true,
+		},
+	}
+
+	// Run test cases
+	for _, tt := range tests {
+		t.Run(fmt.Sprintf("uncleNum=%d", tt.uncleNum), func(t *testing.T) {
+			assertUncleHash(t, tt.uncleNum, tt.expectedUncleHash, tt.expectedWoHash, tt.shouldPass)
+		})
+	}
+}
+
+func assertUncleHash(t *testing.T, uncleNum int, expectedUncleHash common.Hash, expectedWoHash common.Hash, shouldPass bool) {
+	wo, _ := woTestData()
+	wo.Body().uncles = make([]*WorkObjectHeader, uncleNum)
+	for i := 0; i < uncleNum; i++ {
+		uncle, _ := woTestData()
+		wo.Body().uncles[i] = CopyWorkObjectHeader(uncle.WorkObjectHeader())
+	}
+
+	wo.Body().Header().SetUncleHash(CalcUncleHash(wo.Body().uncles))
+	wo.woHeader.SetHeaderHash(wo.Body().header.Hash())
+
+	if shouldPass {
+		require.Equal(t, expectedUncleHash, wo.Header().UncleHash(), "Uncle hashes do not create the expected root hash")
+		require.Equal(t, expectedWoHash, wo.Hash(), "Uncle hashes do not create the expected WorkObject hash")
+	} else {
+		require.NotEqual(t, expectedUncleHash, wo.Header().UncleHash(), "Uncle hashes do not create the expected root hash")
+		require.NotEqual(t, expectedWoHash, wo.Hash(), "Uncle hashes do not create the expected WorkObject hash")
+	}
+}
+
 func fuzzHash(f *testing.F, getField func(*WorkObjectHeader) common.Hash, setField func(*WorkObjectHeader, common.Hash)) {
 	wo, _ := woTestData()
 	f.Add(testByte)