diff --git a/cloudwatch/client.go b/cloudwatch/client.go
index a8b15b6..f446d29 100644
--- a/cloudwatch/client.go
+++ b/cloudwatch/client.go
@@ -56,6 +56,20 @@ func (svc *CloudWatch) DoGetMetricStatistics(in *SDK.GetMetricStatisticsInput) (
 	return out, nil
 }
 
+// PutMetricData executes PutMetricData operation.
+func (svc *CloudWatch) PutMetricData(in PutMetricDataInput) error {
+	return svc.DoPutMetricData(in.ToInput())
+}
+
+// DoPutMetricData executes PutMetricData operation.
+func (svc *CloudWatch) DoPutMetricData(in *SDK.PutMetricDataInput) error {
+	_, err := svc.client.PutMetricData(in)
+	if err != nil {
+		svc.Errorf("error on `PutMetricData` operation; error=%s;", err.Error())
+	}
+	return err
+}
+
 // Infof logging information.
 func (svc *CloudWatch) Infof(format string, v ...interface{}) {
 	svc.logger.Infof(serviceName, format, v...)
diff --git a/cloudwatch/request_type.go b/cloudwatch/request_type.go
index 2e07fff..d0d4a5c 100644
--- a/cloudwatch/request_type.go
+++ b/cloudwatch/request_type.go
@@ -44,8 +44,8 @@ func (o MetricStatisticsInput) ToInput() *SDK.GetMetricStatisticsInput {
 	if o.Unit != "" {
 		in.Unit = &o.Unit
 	}
-	in.Statistics = sliceStringToPointer(o.Statistics)
-	in.ExtendedStatistics = sliceStringToPointer(o.ExtendedStatistics)
+	in.Statistics = pointers.SliceString(o.Statistics)
+	in.ExtendedStatistics = pointers.SliceString(o.ExtendedStatistics)
 
 	in.Dimensions = make([]*SDK.Dimension, 0, len(o.DimensionsMap)+len(o.Dimensions))
 	for key, val := range o.DimensionsMap {
@@ -68,14 +68,108 @@ type Dimension struct {
 	Value string
 }
 
-func sliceStringToPointer(list []string) []*string {
-	if len(list) == 0 {
-		return nil
+type PutMetricDataInput struct {
+	MetricData []MetricDatum
+	Namespace  string
+}
+
+func (o *PutMetricDataInput) AddMetric(d MetricDatum) {
+	o.MetricData = append(o.MetricData, d)
+}
+
+func (o PutMetricDataInput) ToInput() *SDK.PutMetricDataInput {
+	in := &SDK.PutMetricDataInput{}
+	if o.Namespace != "" {
+		in.Namespace = &o.Namespace
 	}
 
-	result := make([]*string, len(list))
-	for i, v := range list {
-		result[i] = pointers.String(v)
+	in.MetricData = make([]*SDK.MetricDatum, 0, len(o.MetricData))
+	for _, v := range o.MetricData {
+		in.MetricData = append(in.MetricData, v.ToSDKValue())
+	}
+	return in
+}
+
+type MetricDatum struct {
+	MetricName        string
+	Unit              string
+	StorageResolution int64
+	Value             float64
+	HasValue          bool // use as true when value == 0
+	Values            []float64
+	Counts            []float64
+	Timestamp         time.Time
+
+	StatisticValues StatisticSet
+	Dimensions      []Dimension
+}
+
+func (d MetricDatum) ToSDKValue() *SDK.MetricDatum {
+	in := &SDK.MetricDatum{}
+	if d.MetricName != "" {
+		in.MetricName = &d.MetricName
+	}
+	if d.Unit != "" {
+		in.Unit = &d.Unit
 	}
-	return result
+	if d.StorageResolution != 0 {
+		in.StorageResolution = &d.StorageResolution
+	}
+	if d.HasValue || d.Value != 0 {
+		in.Value = &d.Value
+	}
+	in.Values = pointers.SliceFloat64(d.Values)
+	in.Counts = pointers.SliceFloat64(d.Counts)
+	if !d.Timestamp.IsZero() {
+		in.Timestamp = &d.Timestamp
+	}
+
+	in.StatisticValues = d.StatisticValues.ToSDKValue()
+	for _, v := range d.Dimensions {
+		in.Dimensions = append(in.Dimensions, &SDK.Dimension{
+			Name:  pointers.String(v.Name),
+			Value: pointers.String(v.Value),
+		})
+	}
+	return in
+}
+
+type StatisticSet struct {
+	Maximum     float64
+	Minimum     float64
+	SampleCount float64
+	Sum         float64
+
+	// use as true when value == 0
+	HasMaximum     bool
+	HasMinimum     bool
+	HasSampleCount bool
+	HasSum         bool
+}
+
+func (d StatisticSet) ToSDKValue() *SDK.StatisticSet {
+	hasValue := false
+
+	in := &SDK.StatisticSet{}
+	if d.HasMaximum || d.Maximum != 0 {
+		in.Maximum = &d.Maximum
+		hasValue = true
+	}
+	if d.HasMinimum || d.Minimum != 0 {
+		in.Minimum = &d.Minimum
+		hasValue = true
+	}
+	if d.HasSampleCount || d.SampleCount != 0 {
+		in.SampleCount = &d.SampleCount
+		hasValue = true
+	}
+	if d.HasSum || d.Sum != 0 {
+		in.Sum = &d.Sum
+		hasValue = true
+	}
+
+	if !hasValue {
+		return nil
+	}
+	return in
 }
diff --git a/private/pointers/pointers.go b/private/pointers/pointers.go
index e4ead3d..ef065a7 100644
--- a/private/pointers/pointers.go
+++ b/private/pointers/pointers.go
@@ -16,7 +16,38 @@ func Long64(v int64) *int64 {
 	return &v
 }
 
+// Float64 returns the pointer of float64.
+func Float64(v float64) *float64 {
+	return &v
+}
+
 // Bool returns the pointer of bool.
 func Bool(b bool) *bool {
 	return &b
 }
+
+// SliceString returns the slice of string pointer.
+func SliceString(list []string) []*string {
+	if len(list) == 0 {
+		return nil
+	}
+
+	result := make([]*string, len(list))
+	for i, v := range list {
+		result[i] = String(v)
+	}
+	return result
+}
+
+// SliceFloat64 returns the slice of float64 pointer.
+func SliceFloat64(list []float64) []*float64 {
+	if len(list) == 0 {
+		return nil
+	}
+
+	result := make([]*float64, len(list))
+	for i, v := range list {
+		result[i] = Float64(v)
+	}
+	return result
+}