diff --git a/iac-template/terraform-standard/README.md b/iac-template/terraform-standard/README.md
index dd8e9f8b..94bb7342 100644
--- a/iac-template/terraform-standard/README.md
+++ b/iac-template/terraform-standard/README.md
@@ -78,7 +78,17 @@ This creates:
 
 PAY_PER_REQUEST billing mode Compatible with Terraform backend locking
 
-## 4. Use in Terraform Backend
+## 4. Bootstrap IAM Role
+
+```
+cd bootstrap-iam
+terraform init
+terraform apply \
+  -var="account_name=dev" \
+  -var="role_name=TerraformDeployRole-Dev"
+```
+
+## 5. Use in Terraform Backend
 
 After both bootstrap steps are completed:
 
@@ -92,7 +102,6 @@ terraform {
   }
 }
 
-
 Then run:
 
 terraform init -migrate-state
diff --git a/iac-template/terraform-standard/backend.tf b/iac-template/terraform-standard/backend.tf
deleted file mode 100644
index c951a79a..00000000
--- a/iac-template/terraform-standard/backend.tf
+++ /dev/null
@@ -1,8 +0,0 @@
-terraform {
-  backend "s3" {
-    bucket = "svc-plus-iac-state"
-    key    = "sit/ec2/terraform.tfstate"
-    region = "svc-plus-iac-state-locks"
-    encrypt        = true
-  }
-}
diff --git a/iac-template/terraform-standard/bootstrap-iam/.gitignore b/iac-template/terraform-standard/bootstrap-iam/.gitignore
new file mode 100644
index 00000000..5e697082
--- /dev/null
+++ b/iac-template/terraform-standard/bootstrap-iam/.gitignore
@@ -0,0 +1,25 @@
+# Local terraform files
+.terraform/
+.terraform.lock.hcl
+terraform.tfstate
+terraform.tfstate.backup
+
+# Auto tfvars generated by CI/CD or sensitive data
+*.tfvars
+*.auto.tfvars
+*.tfvars.json
+
+# IDE / editor files
+.idea/
+.vscode/
+*.swp
+
+# AWS credentials — never commit
+.aws/
+credentials
+config
+
+# OS-specific
+.DS_Store
+Thumbs.db
+
diff --git a/iac-template/terraform-standard/bootstrap-iam/main.tf b/iac-template/terraform-standard/bootstrap-iam/main.tf
new file mode 100644
index 00000000..f9c384da
--- /dev/null
+++ b/iac-template/terraform-standard/bootstrap-iam/main.tf
@@ -0,0 +1,28 @@
+resource "aws_iam_role" "terraform_deploy_role" {
+  name = var.role_name
+
+  assume_role_policy = jsonencode({
+    Version = "2012-10-17"
+    Statement = [{
+      Effect = "Allow"
+      Principal = {
+        AWS = "arn:aws:iam::${local.account.account_id}:root"
+      }
+      Action = "sts:AssumeRole"
+    }]
+  })
+
+  tags = merge(
+    {
+      Name        = var.role_name
+      Environment = local.account.environment
+    },
+    local.account.tags
+  )
+}
+
+# 当前阶段给 Admin 权限（你熟悉后可以缩小）
+resource "aws_iam_role_policy_attachment" "attach_admin" {
+  role       = aws_iam_role.terraform_deploy_role.name
+  policy_arn = "arn:aws:iam::aws:policy/AdministratorAccess"
+}
diff --git a/iac-template/terraform-standard/bootstrap-iam/outputs.tf b/iac-template/terraform-standard/bootstrap-iam/outputs.tf
new file mode 100644
index 00000000..8ee7d701
--- /dev/null
+++ b/iac-template/terraform-standard/bootstrap-iam/outputs.tf
@@ -0,0 +1,3 @@
+output "role_arn" {
+  value = aws_iam_role.terraform_deploy_role.arn
+}
diff --git a/iac-template/terraform-standard/bootstrap-iam/provider.tf b/iac-template/terraform-standard/bootstrap-iam/provider.tf
new file mode 100644
index 00000000..e546cc02
--- /dev/null
+++ b/iac-template/terraform-standard/bootstrap-iam/provider.tf
@@ -0,0 +1,14 @@
+terraform {
+  required_version = ">= 1.2"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.92"
+    }
+  }
+}
+
+provider "aws" {
+  region = var.region
+}
diff --git a/iac-template/terraform-standard/bootstrap-iam/variables.tf b/iac-template/terraform-standard/bootstrap-iam/variables.tf
new file mode 100644
index 00000000..2dfb863f
--- /dev/null
+++ b/iac-template/terraform-standard/bootstrap-iam/variables.tf
@@ -0,0 +1,21 @@
+variable "region" {
+  description = "AWS region"
+  type        = string
+}
+
+variable "account_name" {
+  type        = string
+  description = "Which account configuration to load (e.g., dev)"
+}
+
+variable "role_name" {
+  type        = string
+  description = "IAM role name to create (e.g., TerraformDeployRole-Dev)"
+}
+
+locals {
+  account = yamldecode(
+    file("${path.root}/../config/accounts/${var.account_name}.yaml")
+  )
+}
+
diff --git a/iac-template/terraform-standard/config/accounts/dev.yaml b/iac-template/terraform-standard/config/accounts/dev.yaml
new file mode 100644
index 00000000..3c488f6f
--- /dev/null
+++ b/iac-template/terraform-standard/config/accounts/dev.yaml
@@ -0,0 +1,20 @@
+account_id: "730335654753"   # 目前单账号
+name: dev
+environment: dev
+
+region: ap-northeast-1
+
+role_to_assume: arn:aws:iam::730335654753:role/TerraformDeployRole-Dev
+
+logging_bucket: org-dev-logs
+shared_vpc_account: "730335654753"   # 单账号，所以保持一致
+
+tags:
+  Environment: dev
+  Owner: Platform
+  CostCenter: "DEV"
+
+backend:
+  bucket: svc-plus-iac-state
+  key_prefix: dev/
+  dynamodb_table: svc-plus-iac-state-dynamodb-lock
diff --git a/iac-template/terraform-standard/envs/dev/.gitignore b/iac-template/terraform-standard/envs/dev/.gitignore
new file mode 100644
index 00000000..5e697082
--- /dev/null
+++ b/iac-template/terraform-standard/envs/dev/.gitignore
@@ -0,0 +1,25 @@
+# Local terraform files
+.terraform/
+.terraform.lock.hcl
+terraform.tfstate
+terraform.tfstate.backup
+
+# Auto tfvars generated by CI/CD or sensitive data
+*.tfvars
+*.auto.tfvars
+*.tfvars.json
+
+# IDE / editor files
+.idea/
+.vscode/
+*.swp
+
+# AWS credentials — never commit
+.aws/
+credentials
+config
+
+# OS-specific
+.DS_Store
+Thumbs.db
+
diff --git a/iac-template/terraform-standard/envs/dev/backend.tf b/iac-template/terraform-standard/envs/dev/backend.tf
new file mode 100644
index 00000000..b3af6821
--- /dev/null
+++ b/iac-template/terraform-standard/envs/dev/backend.tf
@@ -0,0 +1,9 @@
+terraform {
+  backend "s3" {
+    bucket         = "svc-plus-iac-state"
+    key            = "account/iam/dev/terraform.tfstate"
+    region         = "ap-northeast-1"
+    dynamodb_table = "svc-plus-iac-state-dynamodb-lock"
+  }
+}
+
diff --git a/iac-template/terraform-standard/envs/dev/main.tf b/iac-template/terraform-standard/envs/dev/main.tf
new file mode 100644
index 00000000..11371a9f
--- /dev/null
+++ b/iac-template/terraform-standard/envs/dev/main.tf
@@ -0,0 +1,11 @@
+locals {
+  account = yamldecode(
+    file("${path.root}/../../config/accounts/dev.yaml")
+  )
+}
+
+# 第一个正式 module：iam
+module "iam" {
+  source  = "../../modules/iam"
+  account = local.account   # << 唯一需要传入 module 的变量
+}
diff --git a/iac-template/terraform-standard/envs/dev/outputs.tf b/iac-template/terraform-standard/envs/dev/outputs.tf
new file mode 100644
index 00000000..567f1a7f
--- /dev/null
+++ b/iac-template/terraform-standard/envs/dev/outputs.tf
@@ -0,0 +1,9 @@
+output "iam_role_arn" {
+  description = "IAM role ARN created for Terraform deployment"
+  value       = module.iam.role_arn
+}
+
+output "iam_role_name" {
+  description = "IAM role name"
+  value       = module.iam.role_name
+}
diff --git a/iac-template/terraform-standard/envs/dev/provider.tf b/iac-template/terraform-standard/envs/dev/provider.tf
new file mode 100644
index 00000000..212806de
--- /dev/null
+++ b/iac-template/terraform-standard/envs/dev/provider.tf
@@ -0,0 +1,20 @@
+terraform {
+  required_version = ">= 1.2"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.92.0"
+    }
+  }
+}
+
+provider "aws" {
+  region = "ap-northeast-1"
+
+  assume_role {
+    role_arn     = "arn:aws:iam::730335654753:role/TerraformDeployRole-Dev"
+    session_name = "TerraformDevSession"
+  }
+}
+
diff --git a/iac-template/terraform-standard/modules/iam/.gitignore b/iac-template/terraform-standard/modules/iam/.gitignore
new file mode 100644
index 00000000..5e697082
--- /dev/null
+++ b/iac-template/terraform-standard/modules/iam/.gitignore
@@ -0,0 +1,25 @@
+# Local terraform files
+.terraform/
+.terraform.lock.hcl
+terraform.tfstate
+terraform.tfstate.backup
+
+# Auto tfvars generated by CI/CD or sensitive data
+*.tfvars
+*.auto.tfvars
+*.tfvars.json
+
+# IDE / editor files
+.idea/
+.vscode/
+*.swp
+
+# AWS credentials — never commit
+.aws/
+credentials
+config
+
+# OS-specific
+.DS_Store
+Thumbs.db
+
diff --git a/iac-template/terraform-standard/modules/iam/main.tf b/iac-template/terraform-standard/modules/iam/main.tf
new file mode 100644
index 00000000..3d80c910
--- /dev/null
+++ b/iac-template/terraform-standard/modules/iam/main.tf
@@ -0,0 +1,18 @@
+resource "aws_iam_role" "this" {
+  name = var.role_name
+
+  assume_role_policy = data.aws_iam_policy_document.assume.json
+
+  tags = var.tags
+}
+
+data "aws_iam_policy_document" "assume" {
+  statement {
+    actions = ["sts:AssumeRole"]
+
+    principals {
+      type        = "AWS"
+      identifiers = ["*"] # 你可以未来改为 OIDC provider 等
+    }
+  }
+}
diff --git a/iac-template/terraform-standard/modules/iam/outputs.tf b/iac-template/terraform-standard/modules/iam/outputs.tf
new file mode 100644
index 00000000..e01d61bc
--- /dev/null
+++ b/iac-template/terraform-standard/modules/iam/outputs.tf
@@ -0,0 +1,3 @@
+output "role_arn" {
+  value = aws_iam_role.this.arn
+}
diff --git a/iac-template/terraform-standard/modules/iam/provider.tf b/iac-template/terraform-standard/modules/iam/provider.tf
new file mode 100644
index 00000000..300cbef7
--- /dev/null
+++ b/iac-template/terraform-standard/modules/iam/provider.tf
@@ -0,0 +1,25 @@
+locals {
+  account = yamldecode(
+    file("${path.root}/../../config/accounts/dev.yaml")
+  )
+}
+
+terraform {
+  required_version = ">= 1.2"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.92.0"
+    }
+  }
+}
+
+provider "aws" {
+  region = var.region
+
+  assume_role {
+    role_arn     = "local.account.role_to_assume"
+    session_name = "TerraformDevSession"
+  }
+}
diff --git a/iac-template/terraform-standard/modules/iam/variables.tf b/iac-template/terraform-standard/modules/iam/variables.tf
new file mode 100644
index 00000000..f90d91e4
--- /dev/null
+++ b/iac-template/terraform-standard/modules/iam/variables.tf
@@ -0,0 +1,18 @@
+variable "account" {
+  type = object({
+    account_id       = string
+    name             = string
+    environment      = string
+    region           = string
+    role_to_assume   = string
+    logging_bucket   = string
+    shared_vpc_account = string
+    backend = object({
+      bucket         = string
+      key_prefix     = string
+      dynamodb_table = string
+    })
+    tags = map(string)
+  })
+}
+