diff --git a/lib/ckb/types/sync_state.rb b/lib/ckb/types/sync_state.rb
new file mode 100644
index 00000000..eae0652e
--- /dev/null
+++ b/lib/ckb/types/sync_state.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+module CKB
+  module Types
+    class SyncState
+      attr_accessor :best_known_block_number, :best_known_block_timestamp, :fast_time, :ibd, :inflight_blocks_count, :low_time, :normal_time, :orphan_blocks_count
+
+      # @param best_known_block_number [String | Integer] integer or hex number
+      # @param best_known_block_timestamp [String | Integer] integer or hex number
+      # @param fast_time [String | Integer] integer or hex number
+      # @param ibd [Boolean]
+      # @param inflight_blocks_count [String | Integer] integer or hex number
+      # @param low_time [String | Integer] integer or hex number
+      # @param normal_time [String | Integer] integer or hex number
+      # @param orphan_blocks_count [String | Integer] integer or hex number
+      def initialize(best_known_block_number:, best_known_block_timestamp:, fast_time:, ibd:, inflight_blocks_count:, low_time:, normal_time:, orphan_blocks_count:)
+        @best_known_block_number = Utils.to_int(best_known_block_number)
+        @best_known_block_timestamp = Utils.to_int(best_known_block_timestamp)
+        @fast_time = Utils.to_int(fast_time)
+        @ibd = ibd
+        @inflight_blocks_count = Utils.to_int(inflight_blocks_count)
+        @low_time = Utils.to_int(low_time)
+        @normal_time = Utils.to_int(normal_time)
+        @orphan_blocks_count = Utils.to_int(orphan_blocks_count)
+      end
+
+      def to_h
+        {
+            best_known_block_number: Utils.to_hex(best_known_block_number),
+            best_known_block_timestamp: Utils.to_hex(best_known_block_timestamp),
+            fast_time: Utils.to_hex(fast_time),
+            ibd: ibd,
+            inflight_blocks_count: Utils.to_hex(inflight_blocks_count),
+            low_time: Utils.to_hex(low_time),
+            normal_time: Utils.to_hex(normal_time),
+            orphan_blocks_count: Utils.to_hex(orphan_blocks_count)
+        }
+      end
+
+      def self.from_h(hash)
+        return if hash.nil?
+
+        new(
+            best_known_block_number: hash[:best_known_block_number],
+            best_known_block_timestamp: hash[:best_known_block_timestamp],
+            fast_time: hash[:fast_time],
+            ibd: hash[:ibd],
+            inflight_blocks_count: hash[:inflight_blocks_count],
+            low_time: hash[:low_time],
+            normal_time: hash[:normal_time],
+            orphan_blocks_count: hash[:orphan_blocks_count]
+        )
+      end
+    end
+  end
+end
diff --git a/lib/ckb/types/types.rb b/lib/ckb/types/types.rb
index 8e2a58fc..2a86bc83 100644
--- a/lib/ckb/types/types.rb
+++ b/lib/ckb/types/types.rb
@@ -39,6 +39,7 @@
 require_relative "block_economic_state"
 require_relative "block_issuance"
 require_relative "miner_reward"
+require_relative "sync_state"
 
 module CKB
   module Types