diff --git a/README.md b/README.md
index 7de30fb..5304793 100644
--- a/README.md
+++ b/README.md
@@ -94,4 +94,25 @@ f.gender()
 
 f.industry()
 # Software & Services
+
+f.CVD()
+# 252
+
+f.CVV()
+# 748
+
+f.CID()
+# 207
+
+f.CAV()
+# 459
+
+f.CVC()
+# 767
+
+f.CSC()
+# 3473
+
+f.CVN()
+# 541
 ```
\ No newline at end of file
diff --git a/lfinancial/factory.py b/lfinancial/factory.py
index 74afe97..0764150 100644
--- a/lfinancial/factory.py
+++ b/lfinancial/factory.py
@@ -1,4 +1,5 @@
 from lfinancial.generators.bank import BankGenerator
+from lfinancial.generators.card import CardGenerator
 from lfinancial.generators.contry import CountryGenerator
 from lfinancial.generators.currency import CurrencyGenerator
 from lfinancial.generators.document import IDCodeGenerator
@@ -40,6 +41,13 @@ def __init__(self):
             "product": StockGenerator(),
             "gender": GenderGenerator(),
             "industry": IndustryGenerator(),
+            "CSC": CardGenerator(),
+            "CID": CardGenerator(),
+            "CVC": CardGenerator(),
+            "CAV": CardGenerator(),
+            "CVV": CardGenerator(),
+            "CVD": CardGenerator(),
+            "CVN": CardGenerator(),
         }
 
     def register_generator(self, name, generator):
diff --git a/lfinancial/financial.py b/lfinancial/financial.py
index 679e6f9..bdeb5dd 100644
--- a/lfinancial/financial.py
+++ b/lfinancial/financial.py
@@ -81,6 +81,27 @@ def gender(self, country=None):
     def industry(self, country=None):
         return self._generate("industry", country)
 
+    def CSC(self, country=None):
+        return self._generate("CSC", country)
+
+    def CID(self, country=None):
+        return self._generate("CID", country)
+
+    def CVC(self, country=None):
+        return self._generate("CVC", country)
+
+    def CAV(self, country=None):
+        return self._generate("CAV", country)
+
+    def CVV(self, country=None):
+        return self._generate("CVV", country)
+
+    def CVD(self, country=None):
+        return self._generate("CVD", country)
+
+    def CVN(self, country=None):
+        return self._generate("CVN", country)
+
 
 if __name__ == '__main__':
     f = Financial()
@@ -108,3 +129,11 @@ def industry(self, country=None):
     print(f.product())
     print(f.gender())
     print(f.industry())
+    print(f.CVD())
+    print(f.CVV())
+    print(f.CID())
+    print(f.CAV())
+    print(f.CVC())
+    print(f.CSC())
+    print(f.CVN())
+
diff --git a/lfinancial/generators/card.py b/lfinancial/generators/card.py
index 29d531d..25e1b42 100644
--- a/lfinancial/generators/card.py
+++ b/lfinancial/generators/card.py
@@ -1,9 +1,54 @@
+import random
+
+
 class CardGenerator:
+
+    def __init__(self):
+        self.default_country = {
+            "card": "US",
+            "CSC": "US"
+        }
+
+    def gen(self, card_type, country=None):
+        if country is None:
+            country = self.default_country.get(card_type)
+
+        match card_type:
+            case "bankcard":
+                doc_type = BankCard(country)
+            case "CSC":
+                doc_type = CSC("CSC")
+            case "CID":
+                doc_type = CSC("CID")
+            case "CVC":
+                doc_type = CSC("CVC")
+            case "CAV":
+                doc_type = CSC("CAV")
+            case "CVV":
+                doc_type = CSC("CVV")
+            case "CVD":
+                doc_type = CSC("CVD")
+            case "CVN":
+                doc_type = CSC("CVN")
+            case _:
+                raise ValueError(f"Unsupported card type: {card_type}.")
+        return doc_type.gen()
+
+
+class CardType:
+    def __init__(self, name):
+        self.name = name
+
+    def gen(self):
+        raise NotImplementedError("Subclasses must implement gen method.")
+
+
+class BankCard(CardType):
     """
     https://en.wikipedia.org/wiki/Payment_card_number
     """
     IIN = {
-        "American Express": [5610, [i for i in range(560221, 560225)]],
+        "American Express": [5610] + [i for i in range(560221, 560225)],
         "Bankcard": [5610, 560221 - 560225],
         "China T-Union": [5610, 560221 - 560225],
         "China UnionPay": [5610, 560221 - 560225],
@@ -35,6 +80,11 @@ class CardGenerator:
         "Napas": [5610, 560221 - 560225],
     }
 
+    def gen(self):
+        return random.choice(self.IIN)
+
+
+class CSC(CardType):
     """
     https://zh.wikipedia.org/wiki/%E9%93%B6%E8%A1%8C%E5%8D%A1%E5%AE%89%E5%85%A8%E7%A0%81
     """
@@ -48,7 +98,16 @@ class CardGenerator:
         "CVN": 3
     }
 
+    def __init__(self, csc_name):
+        super().__init__(csc_name)
+
+    def gen(self):
+        length = self.CSC.get(self.name)
+        range_start = 10 ** (length - 1)
+        range_end = (10 ** length) - 1
+        return random.randint(range_start, range_end)
+
 
 if __name__ == '__main__':
     c = CardGenerator()
-    print(c.IIN)
+    print(c.gen("CID"))
diff --git a/setup.py b/setup.py
index 0d1b9ac..1f14186 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name='lfinancial',
-    version='0.3.0',
+    version='0.3.1',
     author='zaneliu',
     description='Generate financial test data',
     long_description=long_description,