diff --git a/src/main/kotlin/dev/usbharu/ap/model/json/ListSerializer.kt b/src/main/kotlin/dev/usbharu/ap/model/json/ListSerializer.kt
new file mode 100644
index 0000000..3ae938f
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/ap/model/json/ListSerializer.kt
@@ -0,0 +1,24 @@
+package dev.usbharu.ap.model.json
+
+import dev.usbharu.ap.serialization.Deserializable
+import dev.usbharu.ap.serialization.Serializable
+import dev.usbharu.ap.serialization.SerializerSpec
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.buildJsonArray
+import kotlin.reflect.KClass
+
+class ListSerializer<T : Any>(private val clazz: KClass<T>) : Serializable<List<T>>, Deserializable<List<T>> {
+    override fun deserialize(spec: SerializerSpec, element: JsonElement): List<T> {
+        if (element is JsonArray) {
+            return element.map { spec.deserializer(clazz).deserialize(spec, it) }
+        }
+        return listOf(spec.deserializer(clazz).deserialize(spec, element))
+    }
+
+    override fun serialize(spec: SerializerSpec, value: List<T>): JsonElement {
+        return buildJsonArray {
+            value.forEach { add(spec.serializer(clazz).serialize(spec, it)) }
+        }
+    }
+}
diff --git a/src/main/kotlin/dev/usbharu/ap/model/json/StringSerializer.kt b/src/main/kotlin/dev/usbharu/ap/model/json/StringSerializer.kt
index cc6caa1..1ba6e22 100644
--- a/src/main/kotlin/dev/usbharu/ap/model/json/StringSerializer.kt
+++ b/src/main/kotlin/dev/usbharu/ap/model/json/StringSerializer.kt
@@ -1,12 +1,18 @@
 package dev.usbharu.ap.model.json
 
 import dev.usbharu.ap.serialization.Deserializable
+import dev.usbharu.ap.serialization.Serializable
 import dev.usbharu.ap.serialization.SerializerSpec
 import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.JsonPrimitive
 import kotlinx.serialization.json.jsonPrimitive
 
-object StringSerializer : Deserializable<String> {
+object StringSerializer : Deserializable<String>,Serializable<String> {
     override fun deserialize(spec: SerializerSpec, element: JsonElement): String {
         return element.jsonPrimitive.content
     }
+
+    override fun serialize(spec: SerializerSpec, value: String): JsonElement {
+        return JsonPrimitive(value)
+    }
 }
diff --git a/src/main/kotlin/dev/usbharu/ap/serialization/SerializerSpecImpl.kt b/src/main/kotlin/dev/usbharu/ap/serialization/SerializerSpecImpl.kt
index 3cdae70..e6d57d7 100644
--- a/src/main/kotlin/dev/usbharu/ap/serialization/SerializerSpecImpl.kt
+++ b/src/main/kotlin/dev/usbharu/ap/serialization/SerializerSpecImpl.kt
@@ -4,8 +4,8 @@ import kotlinx.serialization.json.JsonElement
 import kotlin.reflect.KClass
 
 class SerializerSpecImpl(
-    val deserializers: MutableMap<KClass<*>, Deserializable<*>> = mutableMapOf(),
-    val serializers: Map<KClass<*>, Serializable<*>> = emptyMap()
+    val deserializers: Map<KClass<*>, Deserializable<*>> = emptyMap(),
+    val serializers: Map<KClass<*>, Serializable<*>> = emptyMap(),
 ) : SerializerSpec {
     override fun <T : Any> deserializer(clazz: KClass<T>): Deserializable<T> =
         deserializers.getValue(clazz) as Deserializable<T>
diff --git a/src/test/kotlin/dev/usbharu/ap/ListSerializerTest.kt b/src/test/kotlin/dev/usbharu/ap/ListSerializerTest.kt
new file mode 100644
index 0000000..7acf29e
--- /dev/null
+++ b/src/test/kotlin/dev/usbharu/ap/ListSerializerTest.kt
@@ -0,0 +1,19 @@
+package dev.usbharu.ap
+
+import dev.usbharu.ap.model.json.StringSerializer
+import dev.usbharu.ap.serialization.SerializerSpecImpl
+import dev.usbharu.ap.serialization.serialize
+import org.junit.jupiter.api.Test
+
+class ListSerializerTest {
+    @Test
+    fun Listをシリアライズ出来るか() {
+        val serializerSpecImpl = SerializerSpecImpl(
+            serializers = mapOf(
+                List::class to dev.usbharu.ap.model.json.ListSerializer(String::class),
+                String::class to StringSerializer
+            )
+        )
+        println(serializerSpecImpl.serialize(listOf(1,2,3)))
+    }
+}
diff --git a/src/test/kotlin/dev/usbharu/ap/PersonSerializeTest.kt b/src/test/kotlin/dev/usbharu/ap/PersonSerializeTest.kt
index b0d1199..9ff3b59 100644
--- a/src/test/kotlin/dev/usbharu/ap/PersonSerializeTest.kt
+++ b/src/test/kotlin/dev/usbharu/ap/PersonSerializeTest.kt
@@ -33,7 +33,7 @@ class PersonSerializeTest {
                 Person::class to Person.Companion,
                 PrimitiveOrArray::class to PrimitiveOrArray.Companion,
                 PublicKey::class to PublicKey.Companion,
-                Image::class to Image.Companion
+                Image::class to Image.Companion,
             )
         ).serialize(person)
         println(serialize)