diff --git a/client/client.go b/client/client.go
index 3faa3a09215..27952df13cd 100644
--- a/client/client.go
+++ b/client/client.go
@@ -36,7 +36,6 @@ import (
 	"github.com/tikv/pd/client/tlsutil"
 	"github.com/tikv/pd/client/tsoutil"
 	"go.uber.org/zap"
-	"google.golang.org/grpc"
 )
 
 const (
@@ -174,69 +173,6 @@ type Client interface {
 	Close()
 }
 
-// GetStoreOp represents available options when getting stores.
-type GetStoreOp struct {
-	excludeTombstone bool
-}
-
-// GetStoreOption configures GetStoreOp.
-type GetStoreOption func(*GetStoreOp)
-
-// WithExcludeTombstone excludes tombstone stores from the result.
-func WithExcludeTombstone() GetStoreOption {
-	return func(op *GetStoreOp) { op.excludeTombstone = true }
-}
-
-// RegionsOp represents available options when operate regions
-type RegionsOp struct {
-	group          string
-	retryLimit     uint64
-	skipStoreLimit bool
-}
-
-// RegionsOption configures RegionsOp
-type RegionsOption func(op *RegionsOp)
-
-// WithGroup specify the group during Scatter/Split Regions
-func WithGroup(group string) RegionsOption {
-	return func(op *RegionsOp) { op.group = group }
-}
-
-// WithRetry specify the retry limit during Scatter/Split Regions
-func WithRetry(retry uint64) RegionsOption {
-	return func(op *RegionsOp) { op.retryLimit = retry }
-}
-
-// WithSkipStoreLimit specify if skip the store limit check during Scatter/Split Regions
-func WithSkipStoreLimit() RegionsOption {
-	return func(op *RegionsOp) { op.skipStoreLimit = true }
-}
-
-// GetRegionOp represents available options when getting regions.
-type GetRegionOp struct {
-	needBuckets                  bool
-	allowFollowerHandle          bool
-	outputMustContainAllKeyRange bool
-}
-
-// GetRegionOption configures GetRegionOp.
-type GetRegionOption func(op *GetRegionOp)
-
-// WithBuckets means getting region and its buckets.
-func WithBuckets() GetRegionOption {
-	return func(op *GetRegionOp) { op.needBuckets = true }
-}
-
-// WithAllowFollowerHandle means that client can send request to follower and let it handle this request.
-func WithAllowFollowerHandle() GetRegionOption {
-	return func(op *GetRegionOp) { op.allowFollowerHandle = true }
-}
-
-// WithOutputMustContainAllKeyRange means the output must contain all key ranges.
-func WithOutputMustContainAllKeyRange() GetRegionOption {
-	return func(op *GetRegionOp) { op.outputMustContainAllKeyRange = true }
-}
-
 var (
 	// errUnmatchedClusterID is returned when found a PD with a different cluster ID.
 	errUnmatchedClusterID = errors.New("[pd] unmatched cluster id")
@@ -250,60 +186,6 @@ var (
 	errNoServiceModeReturned = errors.New("[pd] no service mode returned")
 )
 
-// ClientOption configures client.
-type ClientOption func(c *client)
-
-// WithGRPCDialOptions configures the client with gRPC dial options.
-func WithGRPCDialOptions(opts ...grpc.DialOption) ClientOption {
-	return func(c *client) {
-		c.option.gRPCDialOptions = append(c.option.gRPCDialOptions, opts...)
-	}
-}
-
-// WithCustomTimeoutOption configures the client with timeout option.
-func WithCustomTimeoutOption(timeout time.Duration) ClientOption {
-	return func(c *client) {
-		c.option.timeout = timeout
-	}
-}
-
-// WithForwardingOption configures the client with forwarding option.
-func WithForwardingOption(enableForwarding bool) ClientOption {
-	return func(c *client) {
-		c.option.enableForwarding = enableForwarding
-	}
-}
-
-// WithTSOServerProxyOption configures the client to use TSO server proxy,
-// i.e., the client will send TSO requests to the API leader (the TSO server
-// proxy) which will forward the requests to the TSO servers.
-func WithTSOServerProxyOption(useTSOServerProxy bool) ClientOption {
-	return func(c *client) {
-		c.option.useTSOServerProxy = useTSOServerProxy
-	}
-}
-
-// WithMaxErrorRetry configures the client max retry times when connect meets error.
-func WithMaxErrorRetry(count int) ClientOption {
-	return func(c *client) {
-		c.option.maxRetryTimes = count
-	}
-}
-
-// WithMetricsLabels configures the client with metrics labels.
-func WithMetricsLabels(labels prometheus.Labels) ClientOption {
-	return func(c *client) {
-		c.option.metricsLabels = labels
-	}
-}
-
-// WithInitMetricsOption configures the client with metrics labels.
-func WithInitMetricsOption(initMetrics bool) ClientOption {
-	return func(c *client) {
-		c.option.initMetrics = initMetrics
-	}
-}
-
 var _ Client = (*client)(nil)
 
 // serviceModeKeeper is for service mode switching.
diff --git a/client/option.go b/client/option.go
index 3f2b7119b52..ca21dcfefbf 100644
--- a/client/option.go
+++ b/client/option.go
@@ -142,3 +142,120 @@ func (o *option) setTSOClientRPCConcurrency(value int) {
 func (o *option) getTSOClientRPCConcurrency() int {
 	return o.dynamicOptions[TSOClientRPCConcurrency].Load().(int)
 }
+
+// GetStoreOp represents available options when getting stores.
+type GetStoreOp struct {
+	excludeTombstone bool
+}
+
+// GetStoreOption configures GetStoreOp.
+type GetStoreOption func(*GetStoreOp)
+
+// WithExcludeTombstone excludes tombstone stores from the result.
+func WithExcludeTombstone() GetStoreOption {
+	return func(op *GetStoreOp) { op.excludeTombstone = true }
+}
+
+// RegionsOp represents available options when operate regions
+type RegionsOp struct {
+	group          string
+	retryLimit     uint64
+	skipStoreLimit bool
+}
+
+// RegionsOption configures RegionsOp
+type RegionsOption func(op *RegionsOp)
+
+// WithGroup specify the group during Scatter/Split Regions
+func WithGroup(group string) RegionsOption {
+	return func(op *RegionsOp) { op.group = group }
+}
+
+// WithRetry specify the retry limit during Scatter/Split Regions
+func WithRetry(retry uint64) RegionsOption {
+	return func(op *RegionsOp) { op.retryLimit = retry }
+}
+
+// WithSkipStoreLimit specify if skip the store limit check during Scatter/Split Regions
+func WithSkipStoreLimit() RegionsOption {
+	return func(op *RegionsOp) { op.skipStoreLimit = true }
+}
+
+// GetRegionOp represents available options when getting regions.
+type GetRegionOp struct {
+	needBuckets                  bool
+	allowFollowerHandle          bool
+	outputMustContainAllKeyRange bool
+}
+
+// GetRegionOption configures GetRegionOp.
+type GetRegionOption func(op *GetRegionOp)
+
+// WithBuckets means getting region and its buckets.
+func WithBuckets() GetRegionOption {
+	return func(op *GetRegionOp) { op.needBuckets = true }
+}
+
+// WithAllowFollowerHandle means that client can send request to follower and let it handle this request.
+func WithAllowFollowerHandle() GetRegionOption {
+	return func(op *GetRegionOp) { op.allowFollowerHandle = true }
+}
+
+// WithOutputMustContainAllKeyRange means the output must contain all key ranges.
+func WithOutputMustContainAllKeyRange() GetRegionOption {
+	return func(op *GetRegionOp) { op.outputMustContainAllKeyRange = true }
+}
+
+// ClientOption configures client.
+type ClientOption func(c *client)
+
+// WithGRPCDialOptions configures the client with gRPC dial options.
+func WithGRPCDialOptions(opts ...grpc.DialOption) ClientOption {
+	return func(c *client) {
+		c.option.gRPCDialOptions = append(c.option.gRPCDialOptions, opts...)
+	}
+}
+
+// WithCustomTimeoutOption configures the client with timeout option.
+func WithCustomTimeoutOption(timeout time.Duration) ClientOption {
+	return func(c *client) {
+		c.option.timeout = timeout
+	}
+}
+
+// WithForwardingOption configures the client with forwarding option.
+func WithForwardingOption(enableForwarding bool) ClientOption {
+	return func(c *client) {
+		c.option.enableForwarding = enableForwarding
+	}
+}
+
+// WithTSOServerProxyOption configures the client to use TSO server proxy,
+// i.e., the client will send TSO requests to the API leader (the TSO server
+// proxy) which will forward the requests to the TSO servers.
+func WithTSOServerProxyOption(useTSOServerProxy bool) ClientOption {
+	return func(c *client) {
+		c.option.useTSOServerProxy = useTSOServerProxy
+	}
+}
+
+// WithMaxErrorRetry configures the client max retry times when connect meets error.
+func WithMaxErrorRetry(count int) ClientOption {
+	return func(c *client) {
+		c.option.maxRetryTimes = count
+	}
+}
+
+// WithMetricsLabels configures the client with metrics labels.
+func WithMetricsLabels(labels prometheus.Labels) ClientOption {
+	return func(c *client) {
+		c.option.metricsLabels = labels
+	}
+}
+
+// WithInitMetricsOption configures the client with metrics labels.
+func WithInitMetricsOption(initMetrics bool) ClientOption {
+	return func(c *client) {
+		c.option.initMetrics = initMetrics
+	}
+}