diff --git a/.gitignore b/.gitignore
index c426c32..5ded82a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+.env
+
 .gradle
 build/
 !gradle/wrapper/gradle-wrapper.jar
diff --git a/build.gradle.kts b/build.gradle.kts
index 7777f1f..77bf063 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -43,6 +43,9 @@ dependencies {
     // HikariCP (커넥션 풀)
     implementation("com.zaxxer:HikariCP:5.0.1")
 
+    // env
+    implementation("io.github.cdimascio:dotenv-kotlin:6.4.0")
+
     implementation("com.h2database:h2:$h2_version")
     implementation("io.ktor:ktor-server-openapi")
     implementation("io.ktor:ktor-server-auth-jvm")
diff --git a/src/main/kotlin/example/com/Application.kt b/src/main/kotlin/example/com/Application.kt
index d545f1e..37cc46e 100644
--- a/src/main/kotlin/example/com/Application.kt
+++ b/src/main/kotlin/example/com/Application.kt
@@ -2,15 +2,49 @@ package example.com
 
 import example.com.plugins.*
 import io.ktor.server.application.*
+import io.ktor.server.netty.*
+import com.zaxxer.hikari.HikariConfig
+import com.zaxxer.hikari.HikariDataSource
+import io.github.cdimascio.dotenv.dotenv
+import org.jetbrains.exposed.sql.Database
 
 fun main(args: Array<String>) {
-    io.ktor.server.netty.EngineMain.main(args)
+    EngineMain.main(args)
 }
 
 fun Application.module() {
+    // 데이터베이스 설정을 여기서 초기화
+    configureDatabase()
+
+    // 다른 설정들
     configureSerialization()
-    configureDatabases()
     configureHTTP()
     configureSecurity()
     configureRouting()
 }
+
+fun Application.configureDatabase() {
+    val dotenv = dotenv()
+
+    val dbUrl = dotenv["DB_URL"] ?: "jdbc:postgresql://localhost:5432/defaultdb"
+    val dbUser = dotenv["DB_USER"] ?: "defaultuser"
+    val dbPassword = dotenv["DB_PASSWORD"] ?: "defaultpassword"
+
+    val hikariConfig = HikariConfig().apply {
+        jdbcUrl = dbUrl
+        driverClassName = "org.postgresql.Driver"
+        username = dbUser
+        password = dbPassword
+        maximumPoolSize = 10
+    }
+
+    try {
+        val dataSource = HikariDataSource(hikariConfig)
+        Database.connect(dataSource)
+        // 연결 성공 시 로그 출력
+        environment.log.info("Database connected successfully! : $dbUrl")
+    } catch (e: Exception) {
+        // 연결 실패 시 오류 로그 출력
+        environment.log.error("Database connection failed: ${e.message}")
+    }
+}