diff --git a/hwe/sammo/GameUnitConstBase.php b/hwe/sammo/GameUnitConstBase.php
index f1c05b74..9887f2b3 100644
--- a/hwe/sammo/GameUnitConstBase.php
+++ b/hwe/sammo/GameUnitConstBase.php
@@ -473,22 +473,17 @@ class GameUnitConstBase{
                 $info[] = "{$reqYear}년 경과 후 사용 가능";
             }
 
+            $constraints = [];
             if($reqTech > 0){
-                $info[] = "기술력 {$reqTech} 이상 필요";
+                $constraints[] = GameUnitConstraintHelper::ReqTech($reqTech);
             }
 
             if($reqCities !== null){
-                $reqCities = array_map(function($reqCity) use (&$info){
-                    $info[] = "{$reqCity} 소유시 가능";
-                    return CityConst::byName($reqCity)->id;
-                }, $reqCities);
+                $constraints[] = GameUnitConstraintHelper::ReqCities($reqCities);
             }
 
             if($reqRegions !== null){
-                $reqRegions = array_map(function($reqRegion) use (&$info){
-                    $info[] = "{$reqRegion} 지역 소유시 가능";
-                    return CityConst::$regionMap[$reqRegion];
-                }, $reqRegions);
+                $constraints[] = GameUnitConstraintHelper::ReqRegions($reqRegions);
             }
 
             $unit = new GameUnitDetail(
@@ -502,9 +497,7 @@ class GameUnitConstBase{
                 $magicCoef,
                 $cost,
                 $rice,
-                $reqTech,
-                $reqCities,
-                $reqRegions,
+                $reqConstraints,
                 $reqYear,
                 $attackCoef,
                 $defenceCoef,
@@ -512,6 +505,7 @@ class GameUnitConstBase{
                 $initSkillTrigger,
                 $phaseSkillTrigger,
                 $iActionList,
+                $constraints
             );
 
             $constID[$id] = $unit;
diff --git a/hwe/sammo/GameUnitConstraint/GameUnitConstraint.php b/hwe/sammo/GameUnitConstraint/GameUnitConstraint.php
new file mode 100644
index 00000000..06c0cc86
--- /dev/null
+++ b/hwe/sammo/GameUnitConstraint/GameUnitConstraint.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace sammo\GameUnitConstraint;
+
+use sammo\General;
+use sammo\KVStorage;
+
+abstract class GameUnitConstraint {
+    private function __construct()
+    {
+    }
+
+    public abstract function test(General $general, KVStorage $env): bool;
+}
\ No newline at end of file
diff --git a/hwe/sammo/GameUnitConstraintHelper.php b/hwe/sammo/GameUnitConstraintHelper.php
new file mode 100644
index 00000000..3341e4f8
--- /dev/null
+++ b/hwe/sammo/GameUnitConstraintHelper.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace sammo;
+
+class GameUnitConstraintHelper {
+
+    static function ReqTech(int $reqTech): array {
+        return [__FUNCTION__, $reqTech];
+    }
+
+    static function ReqCities(array $reqCities): array {
+        return [__FUNCTION__, $reqCities];
+    }
+
+    static function ReqRegions(array $reqRegions): array {
+        return [__FUNCTION__, $reqRegions];
+    }
+
+    static function ReqMinYear(int $reqMinYear): array {
+        return [__FUNCTION__, $reqMinYear];
+    }
+}
+
+namespace sammo\Constraint;
+
+
diff --git a/hwe/sammo/GameUnitDetail.php b/hwe/sammo/GameUnitDetail.php
index 2e63da15..da2b48a9 100644
--- a/hwe/sammo/GameUnitDetail.php
+++ b/hwe/sammo/GameUnitDetail.php
@@ -2,6 +2,8 @@
 
 namespace sammo;
 
+use sammo\GameUnitConstraint\GameUnitConstraint;
+
 class GameUnitDetail implements iAction
 {
     use DefaultAction;
@@ -27,6 +29,7 @@ class GameUnitDetail implements iAction
     public $phaseSkillTrigger;
     /** @var iAction[]|null iActionList */
     public $iActionList;
+    public array $reqConstraints;
 
     public function __construct(
         int $id,
@@ -39,10 +42,7 @@ class GameUnitDetail implements iAction
         float $magicCoef,
         int $cost,
         int $rice,
-        int $reqTech,
-        ?array $reqCities,
-        ?array $reqRegions,
-        int $reqYear,
+        array $reqConstraints,
         array $attackCoef,
         array $defenceCoef,
         array $info,
@@ -60,10 +60,7 @@ class GameUnitDetail implements iAction
         $this->magicCoef = $magicCoef;
         $this->cost = $cost;
         $this->rice = $rice;
-        $this->reqTech = $reqTech;
-        $this->reqCities = $reqCities;
-        $this->reqRegions = $reqRegions;
-        $this->reqYear = $reqYear;
+        $this->reqConstraints = $reqConstraints;
         $this->attackCoef = $attackCoef;
         $this->defenceCoef = $defenceCoef;
         $this->info = $info;