diff --git a/cinn/backends/ir_schedule_test.cc b/cinn/backends/ir_schedule_test.cc
index 487f8c0a05..a3f2ea8c3f 100644
--- a/cinn/backends/ir_schedule_test.cc
+++ b/cinn/backends/ir_schedule_test.cc
@@ -2731,6 +2731,50 @@ TEST(IrSchedule, Annotate) {
   ASSERT_EQ(utils::GetStreamCnt(ir_sch.GetModule().GetExprs().front()), expected_expr);
 }
 
+TEST(IrSchedule, Unannotate) {
+  Context::Global().ResetNameId();
+  Expr M(32);
+  Expr N(32);
+  Placeholder<float> A("A", {M, N});
+  auto B = Compute(
+      {M, N}, [&](Var i, Var j) { return A(i, j); }, "B");
+
+  auto funcs = cinn::lang::LowerVec(
+      "test_split_and_fuse1", CreateStages({A, B}), {A, B}, {}, {}, nullptr, common::DefaultHostTarget(), true);
+  ir::IRSchedule ir_sch(ir::ModuleExpr({funcs[0]->body}));
+  auto fused   = ir_sch.Fuse("B", {0, 1});
+  auto block_b = ir_sch.GetBlock("B");
+  ir_sch.Annotate(block_b, "k1", int(64));
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Annotate(block_b, "k2", bool(true));
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Annotate(block_b, "k3", float(2.0));
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Annotate(block_b, "k4", std::string("v4"));
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Unannotate(block_b, "k1");
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Unannotate(block_b, "k2");
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Unannotate(block_b, "k3");
+  block_b = ir_sch.GetBlock("B");
+  ir_sch.Unannotate(block_b, "k4");
+  std::string expected_expr = R"ROC({
+  ScheduleBlock(root)
+  {
+    serial for (i_j_fused, 0, 1024)
+    {
+      ScheduleBlock(B)
+      {
+        i0, i1 = axis.bind((i_j_fused / 32), (i_j_fused % 32))
+        B[i0, i1] = A[i0, i1]
+      }
+    }
+  }
+})ROC";
+  ASSERT_EQ(utils::GetStreamCnt(ir_sch.GetModule().GetExprs().front()), expected_expr);
+}
+
 TEST(IrSchedule, ComplexIndices) {
   Target target = common::DefaultHostTarget();
   ir::Expr M(32);
diff --git a/cinn/ir/ir_schedule.cc b/cinn/ir/ir_schedule.cc
index fff66d7fec..f83cba4ce3 100644
--- a/cinn/ir/ir_schedule.cc
+++ b/cinn/ir/ir_schedule.cc
@@ -94,6 +94,7 @@ class ScheduleImpl {
   Expr Rfactor(const Expr& rf_loop, int rf_axis);
   Expr AddUnitLoop(const Expr& block) const;
   void Annotate(const Expr& block, const std::string& key, const attr_t& value);
+  void Unannotate(Expr& block, const std::string& key);
   void FlattenLoops(const std::vector<Expr>& loops, const bool force_flat = false);
   void CopyTransformAndLoopInfo(const Expr& block, const Expr& block_target);
   void CopyTransformAndLoopInfo(const std::string& block_name, const std::string& block_target_name);
@@ -1509,6 +1510,18 @@ void ScheduleImpl::Annotate(const Expr& block, const std::string& key, const att
   this->Replace(block, copied_block);
 }
 
+void ScheduleImpl::Unannotate(Expr& block, const std::string& ann_key) {
+  CHECK(block.As<ir::ScheduleBlockRealize>());
+  CHECK(block.As<ir::ScheduleBlockRealize>()->schedule_block.As<ir::ScheduleBlock>());
+  auto* schedule_block = block.As<ir::ScheduleBlockRealize>()->schedule_block.As<ir::ScheduleBlock>();
+  if (schedule_block->attrs.count(ann_key)) {
+    schedule_block->attrs.erase(ann_key);
+  } else {
+    LOG(WARNING) << "Can't find annotation with key: " << ann_key;
+    return;
+  }
+}
+
 void ScheduleImpl::FlattenLoops(const std::vector<Expr>& loops, const bool flat_tensor) {
   CHECK_GT(loops.size(), 0) << "Loops can't be empty!";
   // compute loop
@@ -2008,6 +2021,11 @@ void IRSchedule::Annotate(const Expr& block, const std::string& key, const attr_
   LOG(FATAL) << "Value of attribute:" << key << " input unsupported data type";
 }
 
+void IRSchedule::Unannotate(Expr& block, const std::string& key) {
+  impl_->Unannotate(block, key);
+  trace_.Append(ScheduleDesc::Step("Unannotate", {{"block", std::vector<Expr>({block})}}, {{"key", key}}, {}));
+}
+
 void IRSchedule::FlattenLoops(const std::vector<Expr>& loops, const bool force_flat) {
   impl_->FlattenLoops(loops, force_flat);
   trace_.Append(
diff --git a/cinn/ir/ir_schedule.h b/cinn/ir/ir_schedule.h
index 38a7026a98..36bdc64426 100644
--- a/cinn/ir/ir_schedule.h
+++ b/cinn/ir/ir_schedule.h
@@ -335,6 +335,13 @@ class IRSchedule {
    */
   void Annotate(const Expr& block, const std::string& key, const attr_t& value);
 
+  /*!
+   * \brief To cancel an annotation within a block using the key
+   * \param block The block to be unannotated
+   * \param key The attribute key
+   */
+  void Unannotate(Expr& block, const std::string& key);
+
   /*!
    * \brief flatten the loops in one dim.
    * \param loops  the loops to be flatted.
diff --git a/cinn/ir/schedule_desc.cc b/cinn/ir/schedule_desc.cc
index ebd2368a7e..91cad90647 100644
--- a/cinn/ir/schedule_desc.cc
+++ b/cinn/ir/schedule_desc.cc
@@ -452,6 +452,11 @@ CINN_BUILD_STEP_KIND(AnnotateStringAttr)
     .Attrs({"key", "value"})
     .SetApplyFn(APPLY_FUNC_UNIFORM(AnnotateStringAttr));
 
+CINN_BUILD_STEP_KIND(Unannotate)
+    .Inputs({"block"})
+    .Attrs({"key"})
+    .SetApplyFn(APPLY_FUNC_UNIFORM(FREE_FUNCTION_CONVERTER(&IRSchedule::Unannotate)));
+
 CINN_BUILD_STEP_KIND(FlattenLoops)
     .Inputs({"loops"})
     .Attrs({"force_flat"})
diff --git a/cinn/ir/schedule_desc_test.cc b/cinn/ir/schedule_desc_test.cc
index b33b752cbf..0dd092e07d 100644
--- a/cinn/ir/schedule_desc_test.cc
+++ b/cinn/ir/schedule_desc_test.cc
@@ -641,5 +641,40 @@ TEST_F(TestScheduleDesc, StepKind_Annotate) {
   CheckReplayResult(ir_sch, ir_sch.GetTraceDesc());
 }
 
+TEST_F(TestScheduleDesc, StepKind_Unannotate) {
+  lowered_funcs         = LowerCompute({32, 128}, target);
+  ir::IRSchedule ir_sch = MakeIRSchedule(lowered_funcs);
+
+  auto block_b = ir_sch.GetBlock("B");
+  trace.Append(ScheduleDesc::Step("GetBlock", {}, {{"block_name", std::string("B")}}, {block_b}));
+  ir_sch.Annotate(block_b, "k1", int(64));
+  trace.Append(ScheduleDesc::Step("AnnotateIntAttr",
+                                  {{"block", std::vector<Expr>({block_b})}},
+                                  {{"key", std::string("k1")}, {"value", int(64)}},
+                                  {}));
+
+  block_b = ir_sch.GetBlock("B");
+  trace.Append(ScheduleDesc::Step("GetBlock", {}, {{"block_name", std::string("B")}}, {block_b}));
+  ir_sch.Annotate(block_b, "k2", bool(true));
+  trace.Append(ScheduleDesc::Step("AnnotateBoolAttr",
+                                  {{"block", std::vector<Expr>({block_b})}},
+                                  {{"key", std::string("k2")}, {"value", bool(true)}},
+                                  {}));
+
+  block_b = ir_sch.GetBlock("B");
+  trace.Append(ScheduleDesc::Step("GetBlock", {}, {{"block_name", std::string("B")}}, {block_b}));
+  ir_sch.Unannotate(block_b, "k1");
+  trace.Append(
+      ScheduleDesc::Step("Unannotate", {{"block", std::vector<Expr>({block_b})}}, {{"key", std::string("k1")}}, {}));
+
+  block_b = ir_sch.GetBlock("B");
+  trace.Append(ScheduleDesc::Step("GetBlock", {}, {{"block_name", std::string("B")}}, {block_b}));
+  ir_sch.Unannotate(block_b, "k2");
+  trace.Append(
+      ScheduleDesc::Step("Unannotate", {{"block", std::vector<Expr>({block_b})}}, {{"key", std::string("k2")}}, {}));
+
+  CheckReplayResult(ir_sch, trace);
+  CheckReplayResult(ir_sch, ir_sch.GetTraceDesc());
+}
 }  // namespace ir
 }  // namespace cinn