diff --git a/alpha/contractelements.py b/alpha/contractelements.py
new file mode 100644
index 0000000..542da75
--- /dev/null
+++ b/alpha/contractelements.py
@@ -0,0 +1,79 @@
+# -*- coding:utf-8 -*-
+
+
+import json
+
+from alpha import const
+from alpha.utils import logger
+
+
+class ContractElements:
+
+    def __init__(self, contract_code=None, mode_type=None, swap_delivery_type=None, instrument_index_code=None, real_time_settlement=None, transfer_profit_ratio=None, cross_transfer_profit_ratio=None,
+                 instrument_type=None, trade_partition=None, min_level=None, max_level=None, settle_period=None, funding_rate_cap=None, funding_rate_floor=None,
+                 contract_infos=None, long_position_limit=None, offset_order_limit=None,open_order_limit=None,short_position_limit=None,price_ticks=None,instrument_values=None,
+                 order_limits=None, normal_limits=None, open_limits=None,trade_limits=None):
+        """ Initialize. """
+        self.contract_code = contract_code
+        self.mode_type = mode_type
+        self.swap_delivery_type = swap_delivery_type
+        self.instrument_index_code = instrument_index_code
+        self.real_time_settlement = real_time_settlement
+        self.transfer_profit_ratio = transfer_profit_ratio
+        self.cross_transfer_profit_ratio = cross_transfer_profit_ratio
+        self.instrument_type = instrument_type
+        self.trade_partition = trade_partition
+        self.min_level = min_level
+        self.max_level = max_level
+        self.settle_period = settle_period
+        self.funding_rate_cap = funding_rate_cap
+        self.funding_rate_floor = funding_rate_floor
+        self.contract_infos = contract_infos
+        self.long_position_limit = long_position_limit
+        self.offset_order_limit = offset_order_limit
+        self.open_order_limit = open_order_limit
+        self.short_position_limit = short_position_limit
+        self.price_ticks = price_ticks
+        self.instrument_values = instrument_values
+        self.order_limits = order_limits
+        self.normal_limits = normal_limits
+        self.open_limits = open_limits
+        self.trade_limits = trade_limits
+
+    @property
+    def data(self):
+        d = {
+            "contract_code": self.contract_code,
+            "mode_type": self.mode_type,
+            "swap_delivery_type": self.swap_delivery_type,
+            "instrument_index_code": self.instrument_index_code,
+            "real_time_settlement": self.real_time_settlement,
+            "transfer_profit_ratio": self.transfer_profit_ratio,
+            "cross_transfer_profit_ratio": self.cross_transfer_profit_ratio,
+            "instrument_type": self.instrument_type,
+            "trade_partition": self.trade_partition,
+            "min_level": self.min_level,
+            "max_level": self.max_level,
+            "settle_period": self.settle_period,
+            "funding_rate_cap": self.funding_rate_cap,
+            "funding_rate_floor": self.funding_rate_floor,
+            "contract_infos": self.contract_infos,
+            "long_position_limit": self.long_position_limit,
+            "offset_order_limit": self.offset_order_limit,
+            "open_order_limit": self.open_order_limit,
+            "short_position_limit": self.short_position_limit,
+            "price_ticks": self.price_ticks,
+            "instrument_values": self.instrument_values,
+            "order_limits": self.order_limits,
+            "normal_limits": self.normal_limits,
+            "open_limits": self.open_limits,
+            "trade_limits": self.trade_limits,
+        }
+        return d
+
+    def __str__(self):
+        info = json.dumps(self.data)
+        return info
+
+    def __repr__(self):
+        return str(self)