diff --git a/drools/src/main/java/cn/bunny/drools/bean/exercise/CreditCardApply.java b/drools/src/main/java/cn/bunny/drools/bean/exercise/CreditCardApply.java
new file mode 100644
index 0000000..15f94a0
--- /dev/null
+++ b/drools/src/main/java/cn/bunny/drools/bean/exercise/CreditCardApply.java
@@ -0,0 +1,49 @@
+package cn.bunny.drools.bean.exercise;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class CreditCardApply {
+
+    public static final String EDUCATION_1 = "专科以下";
+    public static final String EDUCATION_2 = "专科";
+    public static final String EDUCATION_3 = "本科";
+    public static final String EDUCATION_4 = "本科以上";
+
+    private String name;
+
+    private String sex;
+
+    private int age;
+
+    private String education;
+
+    private String telephone;
+
+    /* 月收入 */
+    private double monthlyIncome = 0;
+
+    private String address;
+
+    /* 是否有房 */
+    private boolean hasHouse = false;
+
+    /* 是否有车 */
+    private boolean hasCar = false;
+
+    /* 现持有信用卡数量 */
+    private int hasCreditCardCount = 0;
+
+    /* 审核是否通过 */
+    private boolean checkResult = true;
+
+    /* 额度 */
+    private double quota = 0;
+
+}
diff --git a/drools/src/main/java/cn/bunny/drools/controller/CreditCardApplyController.java b/drools/src/main/java/cn/bunny/drools/controller/CreditCardApplyController.java
new file mode 100644
index 0000000..a7f4050
--- /dev/null
+++ b/drools/src/main/java/cn/bunny/drools/controller/CreditCardApplyController.java
@@ -0,0 +1,36 @@
+package cn.bunny.drools.controller;
+
+import cn.bunny.drools.bean.exercise.CreditCardApply;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.SneakyThrows;
+import org.kie.api.KieBase;
+import org.kie.api.KieServices;
+import org.kie.api.runtime.KieContainer;
+import org.kie.api.runtime.KieSession;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@Tag(name = "申请信用卡")
+@RequestMapping("/api/credit-card")
+public class CreditCardApplyController {
+
+    @SneakyThrows
+    @PostMapping("")
+    @Operation(summary = "申请信用卡")
+    public CreditCardApply creditCardApply(@RequestBody CreditCardApply creditCardApply) {
+        KieServices kieServices = KieServices.Factory.get();
+        KieContainer kieContainer = kieServices.getKieClasspathContainer();
+        KieBase kieBase = kieContainer.getKieBase("CreditCardApply");
+        KieSession kieSession = kieBase.newKieSession();
+
+        kieSession.insert(creditCardApply);
+        kieSession.fireAllRules();
+        kieSession.dispose();
+        kieSession.close();
+        return creditCardApply;
+    }
+}
diff --git a/drools/src/main/resources/META-INF/kmodule.xml b/drools/src/main/resources/META-INF/kmodule.xml
index cbe5001..b798553 100644
--- a/drools/src/main/resources/META-INF/kmodule.xml
+++ b/drools/src/main/resources/META-INF/kmodule.xml
@@ -1,11 +1,15 @@
 <kmodule xmlns="http://www.drools.org/xsd/kmodule">
 
     <!-- 练习 -->
-    <kbase name="Exercise" packages="rules.exercise" default="true">
+    <kbase name="Exercise" packages="rules.exercise.test" default="false">
     </kbase>
 
-    <!-- 练习 -->
-    <kbase name="ExerciseTax" packages="rules.exercise.tax" default="true">
+    <!-- 计算税额 -->
+    <kbase name="ExerciseTax" packages="rules.exercise.tax" default="false">
+    </kbase>
+
+    <!-- 信用卡 -->
+    <kbase name="CreditCardApply" packages="rules.exercise.card" default="false">
     </kbase>
 
     <!-- demo 练习 -->
diff --git a/drools/src/main/resources/rules/exercise/card/credit-card-apply-stage-1.drl b/drools/src/main/resources/rules/exercise/card/credit-card-apply-stage-1.drl
new file mode 100644
index 0000000..8883f29
--- /dev/null
+++ b/drools/src/main/resources/rules/exercise/card/credit-card-apply-stage-1.drl
@@ -0,0 +1,56 @@
+package rules.exercise.card;
+import cn.bunny.drools.bean.exercise.CreditCardApply;
+
+rule "检查学历与薪水1 如果申请人既没房也没车，同时学历为大专以下，并且月薪少于5000，那么不通过"
+    salience 10
+    no-loop true
+
+    // && 可以写成 ,
+    when
+        $creditCard:CreditCardApply(hasHouse == false, hasCar == false,
+        education == CreditCardApply.EDUCATION_1, monthlyIncome < 5000)
+    then
+        // 审核不通过直接结束
+        $creditCard.setCheckResult(false);
+        drools.halt();
+end
+
+rule "检查学历与薪水2 如果申请人既没房也没车，同时学历为大专或本科，并且月薪少于3000，那么不通过"
+    salience 10
+    no-loop true
+
+    when
+        $creditCard:CreditCardApply(hasCar == false, hasHouse==false,
+            (education == CreditCardApply.EDUCATION_2 || education == CreditCardApply.EDUCATION_3)
+            &&
+            monthlyIncome < 3000
+        )
+    then
+    $creditCard.setCheckResult(false);
+    drools.halt();
+end
+
+rule "检查学历与薪水3 如果申请人既没房也没车，同时学历为本科以上，并且月薪少于2000，同时之前没有信用卡的，那么不通过"
+    salience 10
+    no-loop true
+
+    when
+        $creditCard:CreditCardApply(hasCar == false, hasHouse==false,
+            education == CreditCardApply.EDUCATION_4 , monthlyIncome < 2000
+            , hasCreditCardCount == 0
+        )
+    then
+        $creditCard.setCheckResult(false);
+        drools.halt();
+end
+
+rule "检查申请人已有的信用卡数量 如果申请人现有的信用卡数量大于10，那么不通过"
+    salience 10
+    no-loop true
+
+    when
+        $creditCard:CreditCardApply(hasCreditCardCount > 20)
+    then
+        $creditCard.setCheckResult(false);
+        drools.halt();
+end
diff --git a/drools/src/main/resources/rules/exercise/card/credit-card-apply-stage-2.drl b/drools/src/main/resources/rules/exercise/card/credit-card-apply-stage-2.drl
new file mode 100644
index 0000000..87eaf40
--- /dev/null
+++ b/drools/src/main/resources/rules/exercise/card/credit-card-apply-stage-2.drl
@@ -0,0 +1,79 @@
+package rules.exercise.card;
+import cn.bunny.drools.bean.exercise.CreditCardApply;
+
+rule "如果申请人有房有车，或者月收入在20000以上，那么发放的信用卡额度为15000"
+    salience 1
+    no-loop true
+    activation-group "credit_card_apply_group"
+
+    // && 可以写成 ,
+    when
+        $creditCard:CreditCardApply(
+            checkResult == true
+            &&
+            (hasHouse == true && hasCar == true)
+            ||
+            (monthlyIncome > 20000)
+        )
+    then
+        $creditCard.setQuota(15000);
+end
+
+rule "如果申请人没房没车，但月收入在10000~20000之间，那么发放的信用卡额度为6000"
+    salience 1
+    no-loop true
+    activation-group "credit_card_apply_group"
+
+    when
+        $creditCard:CreditCardApply(
+            checkResult == true && hasHouse == false && hasCar == false
+            && monthlyIncome >= 10000 && monthlyIncome <= 20000
+        )
+    then
+        $creditCard.setQuota(6000);
+end
+
+rule "如果申请人没房没车，月收入在10000以下，那么发放的信用卡额度为3000"
+    salience 1
+    no-loop true
+    activation-group "credit_card_apply_group"
+
+    when
+        $creditCard:CreditCardApply(
+            checkResult == true && hasHouse == false && hasCar == false
+            && monthlyIncome < 10000
+        )
+    then
+        $creditCard.setQuota(3000);
+end
+
+rule "如果申请人有房没车或者没房但有车，月收入在1000以下，那么发放的信用卡额度为5000"
+    salience 1
+    no-loop true
+    activation-group "credit_card_apply_group"
+
+    when
+        $creditCard:CreditCardApply(
+            checkResult == true && (hasHouse == true || hasCar == false)
+            && monthlyIncome < 10000
+        )
+    then
+        $creditCard.setQuota(5000);
+end
+
+rule "如果申请人有房没车或者是没房但有车，月收入在10000~20000之间，那么发放的信用卡额度为8000"
+    salience 1
+    no-loop true
+    activation-group "credit_card_apply_group"
+
+    when
+        $creditCard:CreditCardApply(
+            checkResult == true
+            &&
+            ((hasHouse == true && hasCar == false) || (hasHouse == false && hasCar == true))
+            &&
+            monthlyIncome >= 10000 && monthlyIncome <= 20000
+        )
+    then
+        $creditCard.setQuota(8000);
+end
\ No newline at end of file
diff --git a/drools/src/main/resources/rules/exercise/exercise-01-contains.drl b/drools/src/main/resources/rules/exercise/test/exercise-01-contains.drl
similarity index 93%
rename from drools/src/main/resources/rules/exercise/exercise-01-contains.drl
rename to drools/src/main/resources/rules/exercise/test/exercise-01-contains.drl
index b2c16ca..8523f26 100644
--- a/drools/src/main/resources/rules/exercise/exercise-01-contains.drl
+++ b/drools/src/main/resources/rules/exercise/test/exercise-01-contains.drl
@@ -1,4 +1,4 @@
-package rules.exercise;
+package rules.exercise.test;
 
 import cn.bunny.drools.bean.exercise.ComparisonOperation;
 
diff --git a/drools/src/main/resources/rules/exercise/exercise-02-contains.drl b/drools/src/main/resources/rules/exercise/test/exercise-02-contains.drl
similarity index 93%
rename from drools/src/main/resources/rules/exercise/exercise-02-contains.drl
rename to drools/src/main/resources/rules/exercise/test/exercise-02-contains.drl
index 36fb865..26f4ec3 100644
--- a/drools/src/main/resources/rules/exercise/exercise-02-contains.drl
+++ b/drools/src/main/resources/rules/exercise/test/exercise-02-contains.drl
@@ -1,4 +1,4 @@
-package rules.exercise;
+package rules.exercise.test;
 import cn.bunny.drools.bean.exercise.ComparisonOperation;
 
 rule "exercise-02-contains"
diff --git a/drools/src/main/resources/rules/exercise/exercise-03-contains.drl b/drools/src/main/resources/rules/exercise/test/exercise-03-contains.drl
similarity index 95%
rename from drools/src/main/resources/rules/exercise/exercise-03-contains.drl
rename to drools/src/main/resources/rules/exercise/test/exercise-03-contains.drl
index a631d02..0bbb81d 100644
--- a/drools/src/main/resources/rules/exercise/exercise-03-contains.drl
+++ b/drools/src/main/resources/rules/exercise/test/exercise-03-contains.drl
@@ -1,4 +1,4 @@
-package rules.exercise;
+package rules.exercise.test;
 import cn.bunny.drools.bean.exercise.ComparisonOperation;
 
 rule "exercise-03-contains"
diff --git a/drools/src/main/resources/rules/exercise/exercise-04-contains.drl b/drools/src/main/resources/rules/exercise/test/exercise-04-contains.drl
similarity index 95%
rename from drools/src/main/resources/rules/exercise/exercise-04-contains.drl
rename to drools/src/main/resources/rules/exercise/test/exercise-04-contains.drl
index 801a72d..93c8f0a 100644
--- a/drools/src/main/resources/rules/exercise/exercise-04-contains.drl
+++ b/drools/src/main/resources/rules/exercise/test/exercise-04-contains.drl
@@ -1,4 +1,4 @@
-package rules.exercise;
+package rules.exercise.test;
 import cn.bunny.drools.bean.exercise.ComparisonOperation;
 
 rule "exercise-04-contains"