diff --git a/src/lib/user.js b/src/lib/user.js
new file mode 100644
index 00000000..5203053e
--- /dev/null
+++ b/src/lib/user.js
@@ -0,0 +1,31 @@
+'use server'
+
+const { PrismaClient } = require('@prisma/client')
+
+const prisma = new PrismaClient()
+
+export async function createUser({ userId, password }) {
+  return prisma.m_USER.create({
+    data: {
+      USER_ID: userId,
+      PASSWORD: password,
+    },
+  })
+}
+
+export async function getUser(userId) {
+  return prisma.m_USER.findUnique({
+    where: {
+      user_id: userId,
+    },
+  })
+}
+
+export async function getUsers() {
+  return prisma.m_USER.findMany({
+    where: {
+      // USER_ID: 'daiwajoho01',
+      USER_ID: { in: ['daiwajoho01', 'daiwajoho', 'daiwabutsuryu'] },
+    },
+  })
+}